Martin (Ray Walston) is worried that Tim's house guest Professor Hammerschlag (Leonid Kinskey), an expert on extra-sensory perception, will tumble to his secret identity. To avoid being exposed as a Martian, Martin temporarily transfers his own ESP powers to Mrs. Brown (Pamela Britton). Unfortunately, these powers have bizarre side effects on human beings--including a rapid regression to infancy! ~ Hal Erickson, Rovi