They Came to Kill, first published in 1961, is the fascinating World War II story of the U-boat landings of eight Nazi spies on beaches on Long Island and in Florida in June 1942, equipped with explosives and a large amount of U.S. money. Their mission, known as Operation Pastorius, was to disrupt and destroy vital war manufacturing plants and railways in the Tennessee Valley and elsewhere in the United States. The men were quickly rounded up by the F.B.I., in part due to the voluntary surrender of one of the group’s leaders, George Dasch. Following their arrest, the men were tried before a specially created military tribunal; all eight were found guilty and initially sentenced to death. Six of the men were executed in the electric chair, while President Roosevelt reduced the sentences of two of the men due to their turning themselves in to authorities. Included are 8 pages of illustrations.