Quest Red+1

Looks at how a 'black box' is often the only means of telling how an aeroplane crashed but sometimes generates more questions than answers.

Drugs cure disease and ease pain, but can also be used in murder. Toxicologists uncover cases where death is not as natural as it seems.

A closer look at real FBI cases - from murders to robberies - with dramatic re-enactments and interviews with agents and forensic scientists who work in the investigations.

A closer look at real FBI cases - from murders to robberies - with dramatic re-enactments and interviews with agents and forensic scientists who work in the investigations.

Barrister Robert Rinder examines the case of Rolandas Poskus, a man who was found dead in a park in Hull, and Amanda Playle, a woman who was stalked.

Police officer Andy Kimbrel hopes to find happiness with new wife Stephanie Keller. When the marriage starts to fail, Andy falls victim to manipulation and violence.

A young mother vanishes leaving behind puzzling clues and disturbing questions. Will a needle in the mud reveal the truth behind her disappearance.

In 2018, 59-year-old Pamela Hutchinson is found dead in her Florida condo. The search for answers leads police to a mysterious woman spotted on CCTV.

In a rage, Ben Butler killed his young daughter, Ellie, but along with his wife faked a 999 call and protested innocence. Experts analyse their interviews.

Ashley Pittman thinks she met her perfect match when she marries Jeffrey Scott. But behind the closed doors of her new life, a secret threatens to turn deadly.

Property developer Robert Pann and trainee nurse Bernice Gray seem like the ideal match. But buried secrets are about to end this picture-perfect romance.

In 2005, a woman is reported missing when she fails to show up at a Motley Crue concert. To this day, her friends and family wait for her killer to visit her secret grave.

In 2001, 15-year-old Danielle Jones disappeared on her way to school. Two decades on, her family still fight for justice.

Pregnant student Loretta Saunders vanishes. Her trail runs cold after she is spotted on CCTV at her apartment building. The race to find her is now on.

The Body In The Tree. Stephen Bennett was vacationing in Goa, India, when he accidentally got involved in a series of events that led to him fearing for his life.

When a 17-year-old girl was attacked and murdered in her Wiltshire home, her killer was until the day before her boyfriend. What made him turn killer.