Quite different from his two earlier books, and holding much more possibilities for a popular sale. First and foremost it is good adventure, suggesting appeal to such as liked Seaplane Solo and Pirate Junk, though this is frankly fiction. Second, it is an original setting, an original plot. A youngish woman, thirty or thereabouts, is left alone in the midst of Central German Africa, warped by her narrow religious concepts and her passionate devotion to the memory of her missionary brother, whose death she blames on the Germans who had conscripted the natives. The story starts at the beginning of the war. Cockney Charlie arrives in a battered old steam launch, and Rose is fired with the idea of turning it into a torpedo boat. The feat is a dangerous one, but they reach their objective, only to be wrecked at the end. A unique sort of love story -- and good adventure, well told.