Dead Man's Quarry

"The murderer was also riding a bicycle... why, if we can trace it, we shall have the murderer!"

On a cycling holiday in idyllic Herefordshire countryside, Nora and her friends make a gruesome discovery - the body of their missing comrade at the bottom of a quarry. But an apparently accidental fall turns out to have been murder - for the man was shot in the head.

Fortunately John Christmas, last seen in The Studio Crime (1929), is on hand with his redoubtable forensic associate, Sydenham Ramp...