A dangerous combination of radiation and insecticide causes the unfortunate Scott Carey to shrink, slowly but surely, until he is only a few inches tall. His home becomes a wilderness where he must survive everything from spiders living in the cellar to his beloved cat.
| Actor | Role |
|---|---|
 Grant WilliamsScott Carey | Scott Carey |
 Randy StuartLouise Carey | Louise Carey |
 April KentClarice Bruce | Clarice Bruce |
 Paul LangtonCharlie Carey | Charlie Carey |
 Raymond BaileyDoctor Thomas Silver | Doctor Thomas Silver |
 William SchallertDoctor Arthur Bramson | Doctor Arthur Bramson |
 Frank J. ScannellBarker | Barker |
| HHelene MarshallNurse | Nurse |
 Diana DarrinNurse | Nurse |
 Billy CurtisMidget | Midget |
| CCharles PerrySpieler (uncredited) | Spieler (uncredited) |
 Chet BrandenburgBalloon Vendor (uncredited) | Balloon Vendor (uncredited) |
| JJohn HiestandKIRL TV Newscaster (uncredited) | KIRL TV Newscaster (uncredited) |
| JJoe LaBarbaJoe (uncredited) | Joe (uncredited) |
| PPerk LazelleDoctor (uncredited) | Doctor (uncredited) |
 Lock MartinGiant (uncredited) | Giant (uncredited) |
 Regis PartonMinor Role (uncredited) | Minor Role (uncredited) |
| LLuce PotterViolet (uncredited) | Violet (uncredited) |