When a kindly old man is found murdered his family are devastated. But police discover his niece's bingo habit and debts would lead her to kill. S3/Ep6
In Nottinghamshire, 1983, a 16-year-old girl is found raped and murdered. Decades later, advances in forensic technology enable police to find a DNA match. S1/Ep2
In Oxford, a debt-ridden man brutally stabs an antique dealer in a plot to steal a valuable book. A selfie taken by the killer proves a vital piece of evidence. S1/Ep7
When 80-year-old Lea Adri-Soejoko took Rahim Mohammadi under her wing, she had no idea how much he resented her. Until one day, he snapped and attacked her. S2/Ep5
When Iain and Sally Lawrence met, he thought she would bring him wealth and status. But when the relationship crumbled, Iain became desperate for a big pay-out. S2/Ep1
In Texas, a patrol car policeman is obsessed with being a 'Superman Cop.' But when Susan Harrison spurns his advances, he goes rogue - and she ends up dead. S1/Ep5
In Virginia, 2009, student Morgan Harrington vanished. Her body is found, but no culprit is identified until five years later, when another student goes missing. S1/Ep4
In Elgin, Scotland, a young mother goes missing in 1998. Investigators fear they will never find out what happened until they discover the killer made a key mistake. S1/Ep1
Within weeks of their wedding, a debt-ridden wife recruits a team of teenagers to help her get her hands on her husband's life insurance policy. S3/Ep9
For years a man's crimes go undetected. His offending intensifies, and when a university student goes missing, detectives race to find her killer. S3/Ep2
In Louisiana, 23 young men are found dead over a decade. Investigators search for the Bayou Strangler without success until the killer makes an error. S3/Ep1
When a kindly old man is found murdered his family are devastated. But police discover his niece's bingo habit and debts would lead her to kill. S3/Ep6
Within weeks of their wedding, a debt-ridden wife recruits a team of teenagers to help her get her hands on her husband's life insurance policy. S3/Ep9
When Sarah Wellgreen suddenly disappears, detectives desperately search for her. But after discovering no evidence, they investigate closer to home. S3/Ep10
When Iain and Sally Lawrence met, he thought she would bring him wealth and status. But when the relationship crumbled, Iain became desperate for a big pay-out. S2/Ep1
Kenneth Countie thought he'd found the love he'd always wanted with Sheila LaBarre. But Kenny became the latest in a string of men LaBarre had used and abused. S2/Ep10
Whilst his family moved upstate, Paul Novak stayed in New York where he met a new lover. When his wife discovered the affair, Paul persuaded a mate to help him kill her. S2/Ep9
Within weeks of their wedding, a debt-ridden wife recruits a team of teenagers to help her get her hands on her husband's life insurance policy. S3/Ep9
In Texas, a patrol car policeman is obsessed with being a 'Superman Cop.' But when Susan Harrison spurns his advances, he goes rogue - and she ends up dead. S1/Ep5
In Elgin, Scotland, a young mother goes missing in 1998. Investigators fear they will never find out what happened until they discover the killer made a key mistake. S1/Ep1
When boxer Shaun Cummins was paralysed in an accident, Thomas Dunkley became his carer. But when payday never came, Thomas took what he thought was rightfully his. S2/Ep7
When 80-year-old Lea Adri-Soejoko took Rahim Mohammadi under her wing, she had no idea how much he resented her. Until one day, he snapped and attacked her. S2/Ep5
When Iain and Sally Lawrence met, he thought she would bring him wealth and status. But when the relationship crumbled, Iain became desperate for a big pay-out. S2/Ep1
On a stormy night in Memphis, Micah Rine Pate mysteriously disappears, leaving behind unanswered questions and a husband whose story just doesn't add up. S4/Ep8
In Texas, a patrol car policeman is obsessed with being a 'Superman Cop.' But when Susan Harrison spurns his advances, he goes rogue - and she ends up dead. S1/Ep5
The disappearance of Denise Williams' husband leaves her devastated. But, when his mother investigates, she discovers the heart-wrenching truth of his demise. S4/Ep4
In Virginia, 2009, student Morgan Harrington vanished. Her body is found, but no culprit is identified until five years later, when another student goes missing. S1/Ep4
Natalie and Paul had a seemingly idyllic relationship. But when she suddenly disappears, the investigation uncovers a dark reality of control and violence. S4/Ep2
In Elgin, Scotland, a young mother goes missing in 1998. Investigators fear they will never find out what happened until they discover the killer made a key mistake. S1/Ep1
Kelly Cochran helped her husband Jason kill her lover Chris after a wedding night pact. But Kelly never got over Chris's death, and a year later she murdered Jason. S2/Ep6
When 80-year-old Lea Adri-Soejoko took Rahim Mohammadi under her wing, she had no idea how much he resented her. Until one day, he snapped and attacked her. S2/Ep5
After a whirlwind romance, Kathy Augustine marries nurse Chaz Higgs. But when the marriage turns sour and she mysteriously passes away, detectives suspect foul play. S2/Ep2
When Iain and Sally Lawrence met, he thought she would bring him wealth and status. But when the relationship crumbled, Iain became desperate for a big pay-out. S2/Ep1
In the East Midlands, a businessman disappears after a commercial failure. When police find the bodies of his colleagues and their family, they have one suspect. S1/Ep9
In Texas, a patrol car policeman is obsessed with being a 'Superman Cop.' But when Susan Harrison spurns his advances, he goes rogue - and she ends up dead. S1/Ep5
In Virginia, 2009, student Morgan Harrington vanished. Her body is found, but no culprit is identified until five years later, when another student goes missing. S1/Ep4
In Elgin, Scotland, a young mother goes missing in 1998. Investigators fear they will never find out what happened until they discover the killer made a key mistake. S1/Ep1
A young TV actress lived with her drug addicted brother. But when she asks him to leave, he reacts in the most brutal way - with a gruesome plan to hide his crime. S1/Ep8
In Oxford, a debt-ridden man brutally stabs an antique dealer in a plot to steal a valuable book. A selfie taken by the killer proves a vital piece of evidence. S1/Ep7
On a stormy night in Memphis, Micah Rine Pate mysteriously disappears, leaving behind unanswered questions and a husband whose story just doesn't add up. S4/Ep8
The disappearance of Denise Williams' husband leaves her devastated. But, when his mother investigates, she discovers the heart-wrenching truth of his demise. S4/Ep4
When Katherine Smith connects with Tony Moore on a dating site, she believes she's finally found love. But her dreams shatter when his true identity is revealed. S4/Ep3
When Sarah Wellgreen suddenly disappears, detectives desperately search for her. But after discovering no evidence, they investigate closer to home. S3/Ep10
Within weeks of their wedding, a debt-ridden wife recruits a team of teenagers to help her get her hands on her husband's life insurance policy. S3/Ep9
In East London, a sexual predator found his victims through an online dating app. The victims' families convince the police they are dealing with a serial killer. S1/Ep6
In Texas, a patrol car policeman is obsessed with being a 'Superman Cop.' But when Susan Harrison spurns his advances, he goes rogue - and she ends up dead. S1/Ep5
When a kindly old man is found murdered his family are devastated. But police discover his niece's bingo habit and debts would lead her to kill. S3/Ep6
After killing his first wife for a life insurance pay-out, and getting away with it, Malcolm Webster continued to con women all over the world before he was caught. S2/Ep3