5 Mistakes That Caught a Killer - Season 2 Episode 4 -

The errors made by Mick Philpott that led to his arrest for causing the death of five of his children and their half-brother by setting light to his home in Derby. The programme examines how his unconvincing appearance at a press conference and ill-timed attendance of a karaoke party raised the police's suspicions - leading them to bug his hotel room and hear an incriminating conversation.