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True-crime series following former detective Colin Sutton as he revisits the locations of various important cases and reveals how they were solved. (S4, ep 6)

John Allen and Lee Malvo: The story of the Beltway sniper attacks. John Allen and his teenage accomplice carried out the brutal series of shootings that killed 10.

Dighton - A Deadly Hangover: When his parents criticised him for his idle behaviour, Daniel Dighton stabbed them to death before blaming his crime on a hangover.

Armin Meiwes: Fred Dinenage travels to Germany to investigate the man known as the Cannibal of Rotenburg. Contains graphic descriptions of cannibalism and sexual violence.

Danville Neil: After killing Billy Bryan and Annie Castle, Danville Neil escaped justice for 30 years. But advances in forensics helped convict Neil in 2020. (S8, ep 4)

Documentary exploring the extreme measures people take to break US security laws and America's desperate fight against drugs, illegal immigration and terrorism. (S1, ep 9)

Documentary series from New Zealand following the madness and mayhem faced by intrepid officers as they pull over motorists for a variety of suspected offences. (S17, ep 4)

Documentary series from New Zealand following the madness and mayhem faced by intrepid officers as they pull over motorists for a variety of suspected offences. (S17, ep 5)

Wales: From violent drunks and drug dealers to a dangerous domestic incident, this week's fix focuses on cops based in West Wales. (S1, ep 4)

Documentary following the men and women who help keep motorists safe on some of the most perilous highways and byways of New Zealand. (S8, ep 7)

Documentary following the men and women who help keep motorists safe on some of the most perilous highways and byways of New Zealand. (S8, ep 8)

West Midlands Police put out a decoy car, and a callous carer is caught on camera. (S1, ep 8)

A 14 year-old boy is savagely attacked on a bus, but the attacker is caught on camera and brought to justice. (S1, ep 9)

Police set up a decoy flat, and a man hides in a wardrobe to catch a carer who is stealing money. (S1, ep 10)

Find more spectacular crashes and roadside disasters in a new episode of Caught on Dashcam! (S6, ep 7)

Lakhvir Singh: In January 2009, Lakhvir Singh poisoned her former lover and his fiancée. The deadly plot, driven by jealousy and revenge, ended in tragedy. (S10, ep 1)

Nicky Collingbourne: A young woman is found dead, and police are put onto the trail of a killer who went to elaborate lengths to get away with the deed.

Murder in Suburbia: 35-year-old Zara Aleena was beaten to death just ten minutes from her home. The only evidence of the killer was one bloody fingerprint. (S3, ep 2)

Sante And Kenneth Kimes: An investigation into the murderous mother-and-son duo, who killed their elderly landlady in a greed-fuelled ploy.

Carlson - The Stranger in The Night: Documentary lifting the lid on police investigations into some of the most incredible murder cases in criminal history. (S3, ep 7)

A Quiet Night Out: Robin Chard: As Robin Chard makes his way home to his wife, he crosses paths with two men who carry out a brutal and unprovoked attack on him.

Freda Walker: A quiet suburb is rocked when Freda Walker, 86, is found dead and her husband critically injured. It's not long before a suspect is in the frame. (S7, ep 1)

Middleton: During a drunken argument, violent alcoholic Philip Middleton killed his parents with a granite block in a heartless attack.

Philip Austin: A profile of the man who murdered his wife, two children and two dogs on one terrifying day.

When a much-loved grandmother is found murdered in her home, suspicion falls on everyone from family to neighbours as police seek to find the killer. (S1, ep 3)

New & Exclusive: When a young mother vanishes, detectives piece together her final hours. They have a suspect, but with no body, they can't prove he's guilty. (1 of 2)

New & Exclusive: New evidence brings a conviction but not closure. A body has never been found until startling information leads detectives to a gruesome discovery. (2 of 2)