A man is found shot dead in his office with only his nonchalant client present, but where's the gun?
George Stamford has come to avenge himself on Mr. Chillingham and is discovered in the latter's locked office with Chillingham dead of a gun-shot wound. However, there is no gun to be found and no apparent means of disposing of one. Inspector Walters has to work out how it was done and if George really is a man with an iron constitution.—don @ minifie-1