24 Hours in Police Custody: Season 7, Episode 3

7 - 3: A Knife Through the Heart

A man lies dying in the street from a stab wound to his heart. A friend at the scene is desperate to find out if he will survive, but it's now a crime scene and he's not allowed to see the victim. Paramedics can't save the man so the police begin a murder inquiry, and they believe the friend may be able to tell them what happened. But they know that without his co-operation they may struggle to prove their case. Cameras follow in intimate detail a tragic case with a surprising and disturbing twist. This is real-life crime drama at its most intense.