A Prisoner of Morro is a naval war story. Excerpt: 'About noon of a day in May during the recent year the converted tug Uncas left Key West to join the blockading squadron off the northern coast of Cuba. Her commander was Lieutenant Raymond, and her junior officer Naval Cadet Clifford Faraday. The regular junior officer was absent on sick leave, and Cadet Faraday had been assigned to his place in recognition of gallant conduct. The ropes were cast off, and slowly the tug glided away from the dock and out toward the open sea.'