College prof Peter Boyd tries to salvage his professional and personal reputation by using a lab chimp to prove that environment trumps heredity in behavioral development.

Ronald Reagan
as Professor Peter Boyd

Diana Lynn
as Jane

Walter Slezak
as Professor Hans Neumann

Lucille Barkley
as Valerie Tillinghast

Jesse White
as Babcock

Herbert Heyes
as Dean Tillinghast

Herb Vigran
as Lt. Daggett

Harry Tyler
as Knucksy

Edward Clark
as Fosdick (as Ed Clark)

Edward Gargan
as Policeman (as Ed Gargan)