Barry Prudom was a loner. A quiet bloke, obsessed with the army.But the army wouldn't have him. So he made up his own fantasy world where he pretended he was in the special forces. And instead of a toy gun, Prudom had smuggled in the real thing. His little friend was a Beretta Jaguar – his pride and joy – and they played happily together until one day, on manoeuvers when Prudom pulled the trigger. In a policeman's face.Prudom went on the run. He killed again. And again. That summer of 1982 witnessed the biggest armed police operation the UK had ever seen. For weeks, Prudom gave the cops the slip. But they cornered him in the end and blew his hiding place to pieces. When the gunsmoke cleared they found that the electrician from Leeds had already killed himself.Ex-detective Jacques Morrell followed Barry Prudom's bloody footsteps to Girton – an isolated village on the banks of the River Trent in Nottinghamshire – where he met fellow Psycho Killer host and true-crime investigator, Simon Ford.