London, 1968: The body of a teenage girl is found just steps away from the Beatles' Abbey Road recording studio. The police are called to a residential street in St John's Wood where an unidentified young woman has been strangled. Detective Sergeant Cathal Breen believes she may be one of the many Beatles fans who regularly camp outside Abbey Road Studios. With his reputation tarnished by an inexplicable act of cowardice, this is Breen's last chance...