Dr Sam Ryan investigates her first case as a police consultant - a tragic case involving the death o...

The murder investigation continues and someone breaks into Sam's house. Undeterred, she continues he...

When Mark James's decomposing body is discovered, it bears all the signs of a ritualistic killing.

The police grow frustrated with the lack of a forensic link, but Sam finds more clues in an old case...

The death of a man in custody seems like a straightforward case, but DS Farmer has concerns about so...

Someone is harassing Sam as evidence of a cover-up mounts, and the bomb squad is called in to deal w...

Tragedy strikes after a student asks Sam for advice over her arranged marriage, and then sees her fa...

Sam tries to persuade her student to reveal where her father is hiding. The tragedy spreads beyond t...

A boxer dies from brain injuries mid-bout. A new DSI takes over the team's investigations. Sam and W...

Sam discovers why Kevin entered a bare knuckle fight, as well as uncovering evidence of more foul pl...

Stuart Evans is in the advanced stages of Aids when he dies, and his body is donated to science. How...

The police make an arrest, but do they have the right suspect? Sam pursues her own line of investiga...

The murder of a married woman who was having an affair seems straightforward. Friction develops betw...

The murderer makes a direct threat against Sam's life after she uncovers the evidence needed to iden...

The police suspect a violent alcoholic of the murder of an elderly woman. Sam clashes with the polic...

Sam's pursuit of her own theories leads her into dangerous places, both personally and professionall...

Sam must investigate a case with a painful personal connection when a close friend is murdered after...

The case becomes entangled in Annabelle's romantic relationships when Sam discovers her friend may h...

A young woman is found dead in an empty house. Why was she there? Sam suspects another person was in...

The hunt is on for Mr Harris, but the murderer may be closer to home. Meanwhile, Sam grows closer to...

A tragic scene is discovered when a young mother apparently dies of an overdose. When another addict...

Are the deaths linked to a drug war or is this the work of vigilantes? Sam suspects a personal trage...

The death of a farmer involving a combine harvester seems like an accident - until Sam receives an a...

Sam looks for connections between Ian Neal and a killing in Northern Ireland in 1985. Meanwhile DI C...

Sam learns that the captain of the helicopter died of a heart attack, but she doesn't think it was t...

Sam learns that the captain of the helicopter died of a heart attack, but she doesn't think it was t...

A small-time criminal is the prime suspect in a gangland murder. Sam Ryan believes he may be innocen...

Sam challenges the police after an indepenedent postmortem into McNally's apparent suicide. Further...

Sam searches for the identity of a victim of a cinema fire. A medical artist helps her reconstruct t...

The identity of Body 10 reveals that a violent criminal may have been wrongly convicted of a murder....

Two elderly brothers are found dead in their home, with no apparent injuries. A post mortem discover...

A third death helps Sam realise that the motive behind the murders of the Davies brothers was not ra...

Sam is called in to identify the naked body of a woman uncovered on a ski slope in Norway.

DCI Norton dismisses Sam's idea that a serial killer is at work - until a third body is found at one...

A school director's wife commits suicide, but Sam suspects murder. During the investigation, she rec...

A second post-mortem is perfumed on Helen Dupen and, although Sam is obviously ill, she is determine...

Professor Leo Dalton and Dr Harry Cunningham join Sam Ryan in the investigation of a massive traffic...

Sam, Leo and Harry are at odds with the police investigators when a covert operation is exposed. But...

The police bring in the team when a family is attacked in their own home, leaving the only survivors...

A new murder turns DCI Ashton's suspicions toward the victim's family and friends, whilst Harry inve...

Murder is suspected when the body of a missing person is found hidden within a derelict factory, sev...

As Sam searches for the killer of Marcus Saul, Harry finds himself involved in the tragic death of a...

The murder of a probation officer leads the team to the doorstep of a police cadet college, as they...

As the police investigate the possibility of a copycat killer among the students, a friend from the...

Sam is called after a suspected terrorist attack causes a fire at a hotel and a government minister...

Sam delves deeper into the case but is undermined by the findings of an independent pathologist, bro...

Sam comes under scrutiny at an official inquiry into two prison deaths and an old case Sam worked on...

Sam uncovers a crippling truth about her involvement in a 13-year-old case -did she help convict an...

The body of a young pregnant sports agent is found in the grounds of her office building. Sam and he...

Following her discovery of the second body and believing the cases to be linked, Sam is sidelined fr...

The Home Office ask Sam and her team to examine a number of times of death as given by a highly resp...

Leo and Harry follow up their leads to discover an alarming truth. Are Sam and her team being used b...

The bodies of two young men are discovered, partially exposed, following a landslide on the coast of...

The case takes an interesting turn when the bodies are identified as brothers who disappeared after...

Suspicious symptoms afflicting a group of children on the coast may be linked to the death of a loca...

Leo hunts for the source of the children's symptoms before any more fatalities occur. Meanwhile Harr...

The death of a jockey during a race becomes more complicated when the horse's owners are killed in a...

Foul play is confirmed when it emerges that both the horse and the helicopter pilot were drugged. Co...

Leo and his team are approached by a support group to help discover the truth behind a train crash.

Leo, Harry and Nikki step up their efforts to discover the truth behind the train crash but there ar...

When his wife and teenage daughter are involved in a hit-and-run car crash, Leo begins a painful jou...

As the police infiltrate a gang of identity thieves, Leo faces a choice between justice and revenge.

The team is called to a drive-by shooting outside a London nightclub. They arrive to a scene of carn...

The man behind the bloodshed pits both factions against one another and the team are in a race again...

The team is drawn into the investigation of a series of brutal, apparently motiveless murders in the...

Nikki's beliefs are put to the test as she realises they are facing murders that are committed for s...

A paranoid schizophrenic goes on a violent frenzy in a busy high street. When a young man from the s...

Harry discovers Nazim's death may not have been suicide. Is Dr Sanders the culprit? Meanwhile Leo in...

When a boat carrying illegal passengers is found crashed in the Thames, the team investigate.

The team follows the trail of the people traffickers, and has to find any remaining survivors before...

The team investigates a hit-and-run accident, an arson and a woman who collapsed on her hen night.

The team investigate a man who died on a night bus, an office prank gone tragically wrong and the su...

Harry and Nikki's friendship is rocked by the discovery of the body of Harry's ex-lover.

Memories of his own daughter's death are stirred up when Leo is called in to investigate the suicide...

Memories of his own daughter's death are stirred up when Leo is called in to investigate the apparen...

When a third killing takes place on school grounds, Leo races to find some connection between the ap...

Harry and Nikki are drawn into a war between a medical research establishment and a group determined...

With Nikki missing, Harry works against the clock to find out who is responsible for the murders and...

Harry and Nikki are first on the scene when an RAF helicopter crashes, but Harry's search for answer...

Harry suspects the Ministry of Defence may be covering up the true cause of the helicopter crash, bu...

When the mutilated body of a young boy is pulled from the river, Leo is determined to give him an id...

Leo refuses to back down in his search for the killers of the young boy, despite threats and increas...

The murder of a John Doe leads the team to a hospital, where Nikki is investigating a top paediatric...

With Nikki out of action and Alice's surgical team closing ranks, Harry and Leo dig deeper.

Nikki revisits an emotive case from the past when a girl she proved innocent of murder is herself mu...

Nikki grows increasingly worried that a mistake she made on a case four years ago may have contribut...

When the bones of a young girl are found, everyone but Nikki is convinced it's a teenager who went m...

Having fallen out both with both the police and Clara's family, Nikki finds herself increasingly alo...

Leo does community service on a rough estate after being done for drink-driving.

Frustration within the team builds as Harry and Nikki struggle to find any useful evidence from the...

The team investigates the murder of a woman found dumped on the side of the road with her face remov...

Harry tangles with a Russian oligarch over the murder of a journalist.

The team investigates an armed raid on a suspected terrorist cell in which two suspects and a police...

Nikki faces mounting police hostility to her investigation of the armed raid.

Harry is drawn into the murder of a Hasidic man found on disused wasteland, while Leo investigates t...

A second Hasidic boy is killed, which convinces Harry they are looking for a Jewish killer.

When one boy is found dead and another is abducted, the team faces a race against time to find the m...

As the search for Liam continues, Nikki's loyalty towards her former mentor is tested.

The team is asked to investigate the death of a British medical student in Zambia.

Nikki clashes with Zambian police as she investigates the death of a British medical student.

Leo comes under suspicion for fraud when an insurance investigator accuses him of falsifying a post-...

Harry puts his career on the line to prove his lover's innocence after Leo is attacked and Levin tur...

Harry and Nikki try to remain professional when they find themselves on opposite sides of a high-pro...

The revelation that Flannery's first wife also died of a stair fall sends Harry to Prague to seek ev...

Leo is concerned that the police are involved with a cover-up to protect a rogue undercover cop link...

With Danielle missing and her lover on the run, Leo and the police struggle to unravel a complex web...

Nikki and Harry try to help wounded victims of a campus shooting while trapped in the building with...

Leo's postmortem of the victims reveals there were two guns used, and possibly a second shooter.

When a Zimbabwean asylum seeker is unfairly deported to South Africa, Leo needs to find a way to hel...

Nikki is forced to make some hard choices when she discovers that Anton has been less than honest wi...

When the pathologists investigate three suspicious deaths in one night on the same ward, it looks li...

Nikki's mental instability worsens, and Harry and Leo are forced to get her psychiatric help. But th...

Leo finds himself haunted by past memories when he returns to Sheffield after an ancient body is une...

Leo investigates a potential copycat killing, but the team are starting to wonder if Karl Bentley wa...

As Nikki investigates the drowning of a young mother, Harry is called to an apparent suicide at a ne...

Having established that Lieutenant Lockford was murdered, Leo makes a startling breakthrough, and th...

When human rights lawyer Anna Sandor calls Harry to Budapest to investigate the death of a client, t...

With Harry dead and Leo and Nikki getting nowhere with the police, the pathologists struggle to clea...

After a major incident at the Dutch Embassy, Harry and Nikki are removed from the case when the Dutc...

When the Van Burens' au pair commits suicide, the pathologists start to unravel the truth behind the...

When Leo's friend commits suicide, Harry and Nikki are called to the scene of a violent and calculat...

Harry and DI James deviate from the original investigation to secretly test DNA evidence from the ri...

Harry is disturbed to be called to a crime scene at the home of a family he knows, and finds the bod...

Harry and Nikki delve deeper into the tangled lives of the inhabitants of Magnolia Drive.

Serial killer Arnold Mears Eenjoys poetry but has no remorse for violently killing three teenagers....

Nikki manages to track down the original detective on the case, Detective Inspector Gladwyn ans she...

Prison officer Daniel Kessler and Ellis Roberts refuse to reveal anything after child-killer James W...

The team continue to investigate the murder at the notorious Redhill prison where the efforts to con...

One of Delaney’s patients, Eve Gilston, is discovered dead in her bed. The coroner’s verdict is sudd...

Leo is determined to learn the circumstances about the death of Eve Gilston. Nikki and Harry manage...

Nikki stumbles across a sinister underworld where teenage girls are groomed for sex and forced into...

Harry and Nikki make a crucial connection between the dead girls and sex-grooming victim Shannon, bu...

The mysterious death of a wealthy confectionery firm owner plunges Nikki, Leo and new recruit Jack H...

When two women close to a dead businessman are murdered, Nikki, Jack and Leo open his family's skele...

The murders of two women in a house basement force Jack to lock horns with an old flame, while Leo w...

As the basement women case highlights two cooperating killers, Nikki, Jack and DI Reed realise one v...

When a pub landlady is stabbed to death and her little finger cut off, Nikki is isolated in her ques...

When arrested and interrogated by DI Kate Warren, Alan Lane vehemently protests his innocence and in...

Nikki is wooed by a science minister as she and Jack investigate a murder on an eco-building project...

Conflict brews between Leo and Nikki when he suspects her new boyfriend is involved in a 50-year cov...

Human remains found on an Afghan water supply project send Leo, Nikki and Jack to the war-torn regio...

Leo develops a life-changing relationship with a charity worker as Nikki and Jack make a forensic br...

Premiership footballer Isaac Dreyfus finds his career in tatters after a sex tape links him to the b...

Isaac Dreyfus fights to prove his innocence, whilst Adam Freedman turns to a mysterious source for h...

Nikki finds her professionalism being brought into question during the case of convicted killer Davi...

Thomas is under increased pressure from DI Rachel Klein and the Home Office as he battles to save th...

Nikki and Jack head to Scotland to help earnest rural detective DS Jason Ross investigate the chilli...

Nikki, Jack and DS Ross are feeling the pressure to close the net on a serial killer abducting young...

After the body of a pregnant Northern Irish girl is found, Nikki and Jack need to locate the baby th...

Martin is found dead in suspicious circumstances. Nuri becomes increasingly desperate to locate the...

Jack becomes involved in an investigation into the murder of a 15-year-old girl owing to his persona...

Jack's world has been blown apart following the discovery of Hannah's dead body. Nikki manages to fi...

Nikki and Jack strive to track down a sniper at large in London and stem a public crisis.

Nikki and Jack investigate links between the victims to close the net on the killer.

Nikki and Jack investigate a man killed by a train on the London underground.

Nikki helps high-flying DI Luke Nelson unearth painful childhood memories.

A suspected paedophile is found murdered in a children's playground.

Nikki, Jack and Thomas focus in on Lizzie's movements on the night of Barge's murder.

The nanny of a Russian oligarch is killed in a botched assassination attempt.

A young woman working for the Doshis is found dead in Maksim's apartment.

The Lyell team are under pressure to catch the killer of an admired Essex police officer.

When the body of local criminal Jason Simons is found, the course of the case is changed.

Nikki arrives at a murder scene to find it's a carbon copy of a case in her past.

Nikki becomes the prime suspect after a former colleague is murdered.

A young British Muslim returns to the UK, and concerns over her intentions soon escalate.

Thomas must put his personal feelings aside as the team track down Begovic.

An ex-convict is killed and suspicion lands on a recently released child killer.

Further victims are killed and a distinctive modus operandi begins to become clear.

The shooting of a teenager in an armed police operation triggers a series of murders.

Jack leads the hunt for suspected killer Bruno, the brother of the shot teenager.

A family murdered at a picnic leads the team to the female victim's estranged husband.

As Nikki and Jack move closer to the truth, their lives are thrown into mortal danger.

When a people smuggler is found dead in the City, Nikki must delve into London's illegal immigrant c...

When Nikki, Jack and Thomas make a horrific discovery in the van, they are confronted with the work...

When a photogenic young schoolteacher goes missing, Jack and Nikki are called to the scene and quick...

Having found a link between the two cases, the team struggles to make sense of it. Nikki visits a di...

A woman's body found floating in the Thames leads Nikki and Jack to a community on the banks of the...

Nikki is under fire for leaking information on a suspect, and Thomas is called in to play peacemaker...

When an East End father and son are killed in a shocking road accident, Nikki and Jack find themselv...

Nikki helps Becky come to terms with her trauma. Jack is paranoid that Clarissa will leave the Lyell...

Nikki travels to Mexico to attend the funeral of Luisa, a former intern at the Lyell Centre who was...

A frantic Jack carries out forensic examinations on the spot where Nikki disappeared. With Thomas at...

Nikki struggles to come to terms with life back home and seeks out fellow pathologist Sally Vaughan...

Nikki's suspicions about David Cannon are roused further when she discovers blood in the boot of his...

A series of tragic events are linked to the hacking of a hospital database.

The team wonder if the hack is the only danger as they come under threat.

A US diplomat is shot dead in central London, forcing the team to work closely with the embassy and...

Nikki is still in shock as the team arrive at Matt's residence but insists on working at the Lyell,...

While two care home staff are chasing Kevin McDowd, a young man with learning disabilities and socio...

The team are determined to uncover the truth about unexplained deaths of patients at a care home. Th...

Nikki, Jack, Thomas and Clarissa are just settling down for their respective festive celebrations wh...

As the truth behind the McMorris family is revealed, the team is brought together by the conclusion...

Fresh from her trip to the States, Nikki and the Lyell unit are called in to investigate an attack a...

A mistake has been made during the course of the investigation, and Thomas is targeted as a scapegoa...

With new drugs hitting the streets, a head teacher confronts the dealers preying on his community, a...

When tragedy strikes close to home, it puts head teacher Noah Taylor on a collision course with the...

A collection of dismembered body parts, covered in intricate Japanese tattoos, have been found in a...

The team struggle to find the final piece of the puzzle left behind by the murders in Brighton. At h...

A car-bomb attack in a quiet suburban street brings back unwelcome memories for Jack, when evidence...

During the team’s search for the killer, Jack works alongside an old friend from Northern Ireland, a...

Nikki is humiliated in court when a barrister accuses her of making a serious error in the case of a...

When Thomas sides against her findings on a controversial case, Nikki suspects foul play and takes s...

The team find unexpected connections between the death of a former US ambassador in a plane crash an...

The team discover a connection between the plane crash and a sinister online forum. Meanwhile, Matt...

When the body of a missing teenager is found in a field near his village, Nikki and the Lyell team m...

Investigating the murder of missing teenager Jason Forbes, Nikki and the Lyell team are pressured by...

A woman's body is found on railway tracks in London. When the post-mortem reveals signs of domestic...

When the team's search for Jenny's killer hits a wall, her friends at the women's refuge seek answer...

When a skeleton is found in concrete, the Lyell team must investigate a suspicious death dating back...

The team's investigation leads them to a mysterious cryogenics facility and the discovery of another...

Thomas performs a post-mortem on a soldier who died in military training. His investigation takes a...

Jack is rushed to hospital after collapsing at the scene of a car crash. As he fights for his life,...

While investigating a suspicious death in a prison, Nikki focuses her attention on the victim’s cell...

As the team investigate a second death, Nikki’s theory starts to fall apart. Can she put her fixatio...

In the first case for new recruit Adam, the murder of a swimming instructor leads the team to suspec...

Having traced Laura’s last movements to a suburban house, the team work to identify the bodies burie...

Nikki, Jack and Adam investigate the murder of a surgeon in a hospital. DNA evidence appears to impl...

With their suspect in a coma and an attacker seemingly at large in the hospital, Nikki calls on Adam...

The murder of a promising boxer draws Nikki and Jack into the world of underground boxing. Meanwhile...

Jack, Nikki and Simone investigate another death connected to the underground boxing ring. Jack's lo...

Nikki’s students make an alarming discovery while dissecting a body donated for their training. Jack...

Stranded in the flooded care home, Jack and Simone fight to keep the residents alive - but Nikki dis...

Sam Ryan recruits the Lyell team to investigate the assassination of the health secretary, but Nikki...

DNA evidence linked to the health secretary’s assassination forces Nikki to face her past in the pre...

When a woman confesses to murdering her husband, the Lyell team must determine if all is as it seems...

A secret from his father propels Jack to Belfast. Meanwhile, Simone and Nikki investigate the myster...

The death of an investigative journalist throws the spotlight on to Sam Ryan. Nikki begins to realis...

Events lead Nikki to conclude that getting the truth will put the Lyell team and everything they lov...

When a man plummets from a high-rise building, the Lyell team cross paths with the NCA and a notorio...

Nikki becomes even more involved with the Ndrangheta mafia-group and Jack uncovers some disturbing l...

A lorry is found with people locked inside, some dead. With the survivors refusing to speak, Nikki a...

The Lyell team work together to find out why the lorry was found with bodies inside and a dead drive...

The Lyell team are thrown into the dark side of social media, where nothing is as it seems, and the...

The investigation continues to take unexpected turns, with Nikki managing to get behind the mask of...

Levelling-up leaders and environmental activists clash in a small town trying to look to the future....

The Lyell team return to the tunnel and uncover some difficult truths, while the police raid the pro...

Jack comes to the aid of an old friend, and is sucked into a difficult case, where he is pitted agai...

As they get to the heart of their investigation, the Lyell team navigate corruption, loss and deceit...

A new murder victim forces the team to consider whether a notorious serial killer has resurfaced aft...

When a woman’s body is removed from a reservoir, Nikki performs the post-mortem and confirms she is...

The team work a suspected suicide but the investigation raises more questions than it answers. Gabri...

Events continue to spiral at the university and Cara becomes collateral damage. The riddle of the bo...

The team investigate the body of a woman found in a flat after being dead for a year. As they seek t...

Nikki and Jack work to uncover the truth surrounding Roy’s death and consider if it’s linked to thei...

The team investigate the death of a Burmese man on a deserted beach, as his young pregnant wife desp...

Nikki makes a breakthrough but can the team believe everything they are told? The Lyell is compromis...

The Lyell are called to a museum outside King’s Cross Station, where they discover the bodies of eig...

Nikki continues to try and identify the last of the remaining bodies in an effort to uncover any con...

The death of an elderly woman found in a cave has the Lyell team asking what drives a person to murd...

Benjamin continues his desperate search for Gloria. Nikki’s disturbing discovery joins the dots. A n...

When a man is found bludgeoned by a hammer, the Lyell are drawn deep into a conspiracy involving loc...

After another hammer attack, the Lyell team start uncovering connections to a conspiracy involving l...

Dismembered body parts take Nikki into the crumbling world of criminal justice. Can the Lyell team f...

Nikki conducts an unusual post-mortem, and a terrifying discovery disturbs the team. DNA evidence fo...

When a mysterious contagion starts to spread on a flight from Mumbai, Dr Nikki Alexander faces a rac...

When more passengers become infected on the plane, Nikki and the Lyell team must work to uncover the...

When six people are slaughtered by an unknown gunman, Nikki and Jack must work against the clock to...

The Lyell team investigate another gruesome murder, and the identity of the shooter at the restauran...