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.

Grant Williams
as Scott Carey

Randy Stuart
as Louise Carey

April Kent
as Clarice Bruce

Paul Langton
as Charlie Carey

Raymond Bailey
as Doctor Thomas Silver

William Schallert
as Doctor Arthur Bramson

Frank J. Scannell
as Barker

Helene Marshall
as Nurse

Diana Darrin
as Nurse

Billy Curtis
as Midget