Who? By Algis Budrys

Publisher: Pyramid # G339, 1958, 157 pgs. Mass Market paperback in good condition. Scuffing & edgewear, a crease to the front spine hinge and on the spine. The interior text is unmarked, this is a wellbound and squared copy. "Martino was a very important scientist, working on something called the K-88. But the K-88 exploded in his face, and he was dragged across the Soviet border. There he stayed for months. When they finally gave him back, the Soviets had given him a metal arm...and an expressionless metal skull. So how could Allied Security be sure he actually was Martino ."