Mander's Stores is the newest department store in London. But when its owner and a young shop-worker are discovered murdered amongst the mannequins of the window display, the Store becomes the centre of a decidedly less savoury kind of sensation. Inspector Devenish of the Yard investigates and finds evidence of blackmail, fraudulent patents, tangled love affairs and embezzlement. Devenish is soon forced to admit that there might possibly be such a thing as too many clues...

Originally published in 1930 in Collins's celebrated "Crime Club" imprint, this is a classic British mystery from the golden age of detective fiction.