In December 1966, Frank Mitchell walked off a Dartmoor work party and vanished into a car arranged by the Kray twins. What followed was thirteen days in a east London flat, a series of broken promises, and a killing on Christmas Eve that nobody was ever convicted of in a court of law. This video traces the full story, from Mitchell's decades inside the prison and psychiatric system, through the escape and the deteriorating situation in Barking, to Freddie Foreman's 1996 published confession and the legal reasons it could never be used against him. The body has never been found.