Killer on the Run

In December 1999, a gruesome discovery is made by a police diving team during a training exercise at picturesque Loch Lomond. One by one, limbs from a cadaver are found and brought to the surface. Days later, a severed head washes up on a Scottish beach and is forensically matched to the limbs. They belong to missing 18-year-old Barry Wallace. Police quickly establish a prime suspect, William Beggs - and find that Barry had been handcuffed and sexually assaulted, then dismembered. This documentary takes a forensic look at what happened, and how the killer was brought to justice.

In 1996, a road-rage stabbing left 21-year-old Stephen Cameron fatally wounded. Kenneth Noye was identified as the prime suspect, a figure notorious for his role in the 1986 Brink's-Mat robbery. Previously acquitted of murdering a police officer, Noye fled abroad. This documentary examines the case, and how Britain's most wanted man was finally captured when Stephen's fiancée, Danielle Cable, travelled to Spain to identify him, knowing it would mean a lifetime in witness protection.

London, March 2018. When 34-year-old Laureline Garcia-Bertaux fails to turn up for work, a missing persons inquiry rapidly becomes a murder investigation. Police attending her apartment find her dogs alone. Later, her body is found in a shallow grave in her back garden. As detectives investigate who might be responsible, her ex-boyfriend, pathological liar Kirill Belorusov, quickly becomes their prime suspect after CCTV shows him buying materials similar to those used in Laureline's murder. When he flees the country for his native Estonia, police must navigate European law to bring him back to the UK to face justice.

An 18-year-old is found tied to a pole and her family murdered after a wedding.

When a spate of unexplained hospital deaths in northern England in 2011 is found to be caused by insulin purposely injected into saline bags, police start the hunt for a serial killer. After months of tense investigation and forensic work, investigators narrow their suspect list down to one man, Victorino Chua.

In 2015, Amanda Taylor brutally murdered her father-in-law and took a selfie with the body. On the run and posting online, police raced to stop her before she killed again.

In 2012, Samantha Koenig vanishes at work, sparking a hunt for her elusive abductor.

In 2014, two Pennsylvania troopers are shot by Eric Frein, who evades capture for 48 days.

When an eight-year-old vanishes, investigators must uncover her killer.

After 17-year-old Shari Smith is abducted, her sadistic killer taunts her family.