Set in Pulman-street, Sinclair and his wife live next door to a German violinist and his wife who complains to Mrs. Sinclair of her husband' miserliness despite a roll of gold sovreigns he has. The husband is murdered and Sinclair's investigations include a cheeky criminal and his 'light' lady, a gang of counterfeiters, the envious wife, a policeman masquerading as a ghost, a mistaken arrest and a night at the theatre. (PB)