First Edition. R. Crofoot dustjacket art. Author's only Hubin listed mystery title and presumed first novel. A sentimental man encounters "$15,000 worth of diamonds, a mad automobile ride, an interfering policeman, a pair of crooks and some dozens of other matters". Basis for the 1923 Fox silent black and white film directed by James Flood and starring William Russell and Mabel Scott. Near Fine in Very Good dustjacket with chipped spine ends and flap corners.