 Jacques BergeracDesmond | Desmond |
 Merry AndersDodie Wilson | Dodie Wilson |
 Marcia HendersonMarcia Blaine | Marcia Blaine |
 Allison HayesJustine | Justine |
| JJoe PatridgeDet. Sgt. Dave Kennedy | Det. Sgt. Dave Kennedy |
| FFred DemaraThe Great Impostor | The Great Impostor |
| LLawrence LiptonBeatnik Poet Laureate | Beatnik Poet Laureate |
| EEric NordKing of the Beatniks (as Eric 'Big Daddy' Nord) | King of the Beatniks (as Eric 'Big Daddy' Nord) |
 Guy PrescottDr. Philip Hecht | Dr. Philip Hecht |
 Jimmy LydonEmergency Doctor (as James Lydon) | Emergency Doctor (as James Lydon) |
 Carol ThurstonDoris Scott | Doris Scott |
| EEva LyndWoman from Audience | Woman from Audience |
 Eddie BakerObserver at Scene (uncredited) | Observer at Scene (uncredited) |
| NNina BorgetAudience Member (uncredited) | Audience Member (uncredited) |
| PPhyllis ColeMrs. McNear (uncredited) | Mrs. McNear (uncredited) |
 Franklyn FarnumAudience Member (uncredited) | Audience Member (uncredited) |
| MMary ForanJune Mayes (uncredited) | June Mayes (uncredited) |
| GGeorge FordAudience Member (uncredited) | Audience Member (uncredited) |
| HHolly HarrisMrs. Stevens (uncredited) | Mrs. Stevens (uncredited) |
 Kenner G. KempAudience Member (uncredited) | Audience Member (uncredited) |
| EEvan MacNeilVictim (uncredited) | Victim (uncredited) |
 Monty O'GradyAudience Member (uncredited) | Audience Member (uncredited) |
| AAl RobertsAudience Member (uncredited) | Audience Member (uncredited) |
 Cosmo SardoTheatre Greeter (uncredited) | Theatre Greeter (uncredited) |
