 Eventually, however, the Martian's efforts at pretending to be Dr Layton fall apart, and Foster and Sheila realize what is happening.A series of action scenes show the pair trying to figure out and stop whatever the alien is doing on Earth.Craig and Sheila constantly battle the Purple Monster's henchmen, who use mind-control poisons, carjackings, and even a booby-trapped vacant lot to dispose of Craig and Sheila.