Publication: Odhams Press Limited, nd 1937, London
First edition. 8vo. Near fine in lightly soiled dust jacket with light wear to spine ends, small chip to bottom edge of front panel, and a few tiny closed tears to rear panel. Colonel Ormiston of the Secret Service is asked to learn more about a tunnel that is being projected from Spain under the Straits of Gibralter to Cueta on the African coast. The possible military significance of the tunnel involves British interests and the results could be highly damaging.
Inventory Number: 21947