Gus Dury is back on the drink. While in hospital after a hit-and-run accident, his best friend, Hod, asks him to investigate the ritual, on-campus hanging of an Edinburgh University student. The victim's mother is a high-profile actress, who has promised a reward. Gus, desperate for money, goes undercover at the university, taking a janitor's job, and soon uncovers a similar ritualistic hanging which took place in the 1970s. Few of the students are prepared to talk about it – until another one of their group turns up dead by the same method. But Gus now moves into very dangerous waters as he begins to discover what and who is really behind it all – and he becomes the next target for the executioner.