Yet a close read of this novel and its prequel '''''[[Oxygen (novel)|Oxygen]]''''' clearly shows that the same character responsible for killing Astronaut Hampton and almost killing the rest of the crew, was ''also'' responsible for the failed "lifeboat" mission in the earlier novel. More to the point, however, a Fifth Man ''does'' exist on Mars. The surviving astronauts see him very briefly before they make their hurried take-off. They do not recognize him, but anyone who has read {{Bible ref|book=Daniel|chap=3}} probably will. Thus the Fifth Man ''is'' extraterrestrial, after all, but not in the usual sense in modern popular culture. | Yet a close read of this novel and its prequel '''''[[Oxygen (novel)|Oxygen]]''''' clearly shows that the same character responsible for killing Astronaut Hampton and almost killing the rest of the crew, was ''also'' responsible for the failed "lifeboat" mission in the earlier novel. More to the point, however, a Fifth Man ''does'' exist on Mars. The surviving astronauts see him very briefly before they make their hurried take-off. They do not recognize him, but anyone who has read {{Bible ref|book=Daniel|chap=3}} probably will. Thus the Fifth Man ''is'' extraterrestrial, after all, but not in the usual sense in modern popular culture. |