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.
| Actor | Role |
|---|---|
 Ronald ReaganProfessor Peter Boyd | Professor Peter Boyd |
 Diana LynnJane | Jane |
 Walter SlezakProfessor Hans Neumann | Professor Hans Neumann |
| LLucille BarkleyValerie Tillinghast | Valerie Tillinghast |
 Jesse WhiteBabcock | Babcock |
 Herbert HeyesDean Tillinghast | Dean Tillinghast |
 Herb VigranLt. Daggett | Lt. Daggett |
 Harry TylerKnucksy | Knucksy |
| EEdward ClarkFosdick (as Ed Clark) | Fosdick (as Ed Clark) |
 Edward GarganPoliceman (as Ed Gargan) | Policeman (as Ed Gargan) |
 Joel FriedkinMr. De Witt | Mr. De Witt |
| BBrad BrowneChief of Police | Chief of Police |
| EElizabeth FlournoyMiss Swithen (as Elizabeth Flourney) | Miss Swithen (as Elizabeth Flourney) |
| HHoward BanksPoliceman | Policeman |
| PPerc LaundersFireman | Fireman |
 Brad JohnsonStudent | Student |
 Billy MauchStudent (as Bill Mauch) | Student (as Bill Mauch) |
 Ann TyrrellTelephone Operator | Telephone Operator |
| PPeggyBonzo | Bonzo |