Introducing Henry Pym, a zoology professor and amateur criminologist
Dr Henry Pym, scholar, recluse and amateur detective, is asked to help headmaster Tristram-Jones solve a nasty case of poison-pen writing at his school, perpetrated, it is thought, by one of the teachers. Miss Pugsley, a recent addition to the chemistry staff, is then found dead at the foot of nearby cliffs, and Chief Inspector Judd joins the amateur sleuths. Her death is regarded as suicide until analysis of her clothes points to suspicious circumstances. And when Miss Barton is murdered on stage in the school play, it takes Henry Pym's hard logic, plus a last-minute surprise, to solve the mystery.