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 murder victim's mother is a high-profile actress, who has promised a big-money 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 '70s...