At Combe Parvis in Wiltshire, a retired naval commander has converted an old mill into an inn. Tolefree and Farrar are invited to stay at the inn by Professor Pye, a moral philosopher and friend of Tolefree's, who is recouperatiing there after a touch of influenza. But the quiet trip soon becomes a busman's holiday when, returning from the Guy Fawkes bonfire on the village green, Tolefree and Farrar discover that a fellow guest, the unpleasant Mr. Mock, has gone missing...
Originally published in 1937, this is a vintage murder mystery from the golden age of crime fiction.