Quest Red

No matter how clean a crime scene appears to be, the culprit often leaves something behind. Even a fingerprint or shoe tread can lead to a conviction.

Poisoners: devious killers relying on their victim's trust in order to steal their lives. Find out why they don't usually stop at just one kill.

Two gunmen rob a Seattle bank. One of the gunmen is killed in a firefight with police, while the other escapes after assaulting a family. Can he be caught.

The FBI is called after a vault door refuses to open as it has been blasted into from the ceiling and over $2 million in valuables is gone.

After Alice Ruggles ends their romantic relationship, her ex-boyfriend Harry Dhillon's refusal to let go turns sinister.

Two female nursing assistants in a devout community in Pennsylvania fall in love. Tragedy strikes when the burden of reconciling sexuality and faith becomes too much.

Miles to Nowhere. On a moonless, windy night Maura's car swerves and leaves the road - she is never seen again. But what happened to her.

When a teenager goes missing, detectives struggle for leads. But when surveillance cameras reveal her kidnapping, the case becomes a race to bring her home alive.

Anne Grigg-Booth injected patients with high doses of drugs, murdering three of them. Experts analyse the actions of this disturbing serial killer.

In 1991, a seemingly close-knit family is destroyed by a series of brutal killings by one of their own. What could have caused this murderous betrayal.

In 2014, 19-year-old Keonte Chavis was murdered and left in the woods in Seale, Alabama. With little forensic evidence, police turned to her relatives.

In Arizona, a community is shocked when an unknown shooter goes on a killing spree. Police bodycams capture the hunt for the murderer.

How did forensic technology help track down the killer of Gladys Godfrey? Plus, Ian McNicholl tells the horrific story of his abusive ex-girlfriend.

21-year-old Mickey Shunick is missing after a night out. Police are unable to find any trace of the Louisiana student until they spot her on surveillance video.

Terror In Paradise. In 2005, a couple's holiday in Sharm El Sheikh, Egypt, is shattered when a series of bombs are detonated. Their parents discuss their desperate search.

Teen lovers Kim Edwards and Lucas Markham were convicted of murdering her mum, Elizabeth and younger sister, Katie in April 2016. What led them to kill.

After Alice Ruggles ends their romantic relationship, her ex-boyfriend Harry Dhillon's refusal to let go turns sinister.