This taut espionage novel by J. Storer Clouston follows the exploits of a German U-boat captain tasked with sabotaging British ships during World War I. But when the captain falls in love with a Scottish schoolteacher, his loyalty and mission are put to the ultimate test. This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work is in the "public...