After Altaira tells Morbius that she intends to leave with Adams, Robby detects the creature approaching. Morbius commands Robby to kill the monster, but the robot knows the monster is a creation of Morbius's subconscious mind and shuts down rather than harm him to stop it. Adams, Morbius, and Altaira take refuge in the Krell laboratory, but the creature melts its way through the doors. Morbius finally accepts the truth. He confronts and disowns the creature, but is fatally injured by the backlash. The id monster vanishes. Before Morbius dies, he tricks Adams into activating a planetary self-destruct sequence and tells them to leave the planet immediately. At a safe distance, Adams, Altaira, Robby, and the surviving crew watch the destruction of Altair IV. Adams then comforts Altaira by saying that this tragedy will serve as a reminder that, "... we are, after all, not God." The starship departs for Earth.