Who? is a science fiction novel by American writer Algis Budrys, set during the Cold War. The novel was first published in 1958. It was adapted into a 1974 film of the same name starring Elliott Gould. Plot An explosion resulting from an experiment gone awry rocks an Allied research facility near the border with the Soviet Bloc. A Soviet team abducts Lucas Martino, a leading Allied physicist in charge of a secret, high-priority project called K-88. Several months later, under American pressure, the Soviet officials finally hand over an individual, claiming that he is Martino. The man has undergone extensive surgery for his injuries. He has a mechanical arm that is more advanced than any produced in the West. More importantly, his head is now a nearly featureless metal skull, a kind of extreme craniofacial prosthesis. A medical evaluation reveals that several of the man's internal organs are also artificial. His biological arm and its hand's fingerprints are identified as Martino's, but this may be the result of an arm and hand transplantation. The Allies are suspicious that the Soviets have sent them a technologically altered spy and are holding the real Martino for further interrogation. The struggle to determine the man's true identity is the novel's central conflict. In the end, Shawn Rogers, the agent given the task, is unable to reach a conclusion. The man is released, but kept under surveillance and barred from working on physics projects. Later, when progress bogs down on the K-88 project, Rogers is sent to ask him to come back to work. The man refuses to go, and when finally asked directly if he is Lucas Martino, says simply "No": a reply that will later be seen as trenchantly mordant. Budrys tells the story in alternating chapters. Every second chapter relates part of Lucas Martino's life, highlighting his family, his struggle to support a career in physics, and his dalliances in romance. The young man spent his formative years in an Italian American New Jersey farm community (with English as his second language), then works his way through the City College of New York, and graduate studies at the Massachusetts Institute of Technology. The last part of the novel tells what happened on the Soviet side. It takes many weeks for doctors to save Martino's life. Soviet interrogator Anastas Azarin has little time to work with and is thrown off by