Publication: The Mystery League, Inc, 1931, New York
First U. S. edition. Eighteenth book in the series. Former owner's inked name and date on front free fly leaf, else a fine, bright, copy in a bright, crisp dust jacket. A man carrying diamonds in his pocket that are worth a fortune, is traveling in a train with only five others in the compartment. The train enters a tunnel and after a few seconds of darkness, emerges into the light. The man has a small red hole in his forehead and the diamonds are gone. Dust jacket by "Gene." An elusive title.
Inventory Number: 31777