The military eventually views the Martians as invaders, so the team takes on the guise of Earth men, acquiring human clothes, money, maps, and transportation. They finally select their prospective candidates, setting their sights on four American women: a homecoming queen, a stewardess, a stripper, and, most especially, a Pulitzer Prize-winning scientist, Dr. Bolen (Yvonne Craig), an expert in "space genetics". Resorting to hypnosis, the women are captured, but Dop quickly becomes enamored with Dr. Bolen; soon he is ready to sabotage their mission for her. After the military discovers their hideout, the Martians are forced to return home without their female captives. Mars still needs women.