Who hung the headmaster in the playground on the night of the school Halloween Party? Almost everyone in Heppleburn either hated or feared the viper-tongued Harold Medburn. Inspector Ramsay is convinced it was the headmaster’s enigmatic wife but Jack Robson, school governor and caretaker, is determined to prove her innocence. With the help of his restless daughter Patty, Jack digs into the secrets of Heppleburn, and uncovers a cesspit of lies, adultery, blackmail and madness . . .