 A dead astronaut is found in a crater, and the remains appear to have fallen from a great height without a parachute. Hodgins analyzes the bones and concludes that the body was in space for a long time before it fell to earth; he immediately turns to explanations of extraterrestrial life and a government conspiracy. Brennan and Booth learn the identity of the victim and talk to his family and co-workers, only to be stymied at every turn by the confidentiality involved in the space program. Strange slash-like injuries are discovered on the body and the group realizes that the death was not an accident. They desperately attempt to solve the murder and to figure out how the body ended up in a crater looking like it fell from space. Meanwhile, Hodgins continues to try to win Angela over.