Former Detective Chief Inspector Colin Sutton spent 30 years in the police force, a career that saw him lead many of the most high profile and successful murder investigations of his generation. In this brand new and exclusive series, Sutton revisits cases he led and explores everything from the crime itself through to the breakthrough moment when the suspect was identified and arrested.
Duncan Bone: After being picked up by NHS worker Duncan Bone at King's Cross in 1992, Karl Warne and Colin Lockett would murder their host at his flat. (S2, ep 7)