With limited fuel, the crew choose Mann's planet over Edmunds' as the next stop, since Mann is still transmitting. Once there, Mann assures the crew that the frozen planet is habitable despite its ammonia-laden atmosphere. Then, while out together surveying the planet, Mann attempts to kill Cooper, revealing that he falsified the data in hopes of being rescued. He steals Cooper's ranger and heads for Endurance. Meanwhile, Romilly is killed by a booby trap set by Mann. Amelia rescues Cooper and they race to Endurance in a second lander, where Mann is attempting a dangerous manual docking operation. Mann ignores Cooper's warnings and is killed in the attempt, severely damaging the Endurance in the process. Cooper uses the lander to stabilize the ship.