Book excerpt: When Johnny's underpants are stolen, such is his outrage that he takes a solemn vow: Until the day he tracks down the underpants thief and brings him to justice, he will 'go commando.' Deprived of his jocks and driven by a relentless desire for justice, he investigates not only the theft of his undergarment but also the circumstances surrounding a trail of bodies left in south London by the 'underpants killer.' Could the underpants thief and the underpants killer be the same person? Is the serial killer a 'trophy hunter'? With no jocks on, will Johnny get a chill in his kidneys? These are the questions Johnny must answer as he 'rides bareback' in his quest to find the culprit.