 Ricardo MontalbanPeter Moralas | Peter Moralas |
 Sally ForrestGrace Shanway | Grace Shanway |
 Bruce BennettDr. McAdoo | Dr. McAdoo |
 Elsa LanchesterMrs. Smerrling | Mrs. Smerrling |
 Marshall ThompsonHenry Shanway | Henry Shanway |
 Jan SterlingVivian Heldon | Vivian Heldon |
 Edmon RyanJames Joshua Harkley | James Joshua Harkley |
 Betsy BlairJackie Elcott | Jackie Elcott |
| WWally MaherTim Sharkey | Tim Sharkey |
 Ralph DumkeJim Black the Tattooist | Jim Black the Tattooist |
 Willard WatermanThe Mortician | The Mortician |
 Walter BurkeThe Ornithologist | The Ornithologist |
 Don SheltonA District Attorney | A District Attorney |
| EElsie BakerElderly Lady (uncredited) | Elderly Lady (uncredited) |
| GGeorge BrandMan in Bedroom (uncredited) | Man in Bedroom (uncredited) |
| RRalph BrooksReporter (uncredited) | Reporter (uncredited) |
| DDouglas CarterCounterman at The Dunes (uncredited) | Counterman at The Dunes (uncredited) |
| MMack ChandlerDoorman (uncredited) | Doorman (uncredited) |
 Noble 'Kid' ChissellDiner Patron (uncredited) | Diner Patron (uncredited) |
 George CooperReporter (uncredited) | Reporter (uncredited) |
 John CrawfordReporter (uncredited) | Reporter (uncredited) |
| LLucille CurtisMrs. Harkley (uncredited) | Mrs. Harkley (uncredited) |
| BBert DavidsonDr. Thorpe (uncredited) | Dr. Thorpe (uncredited) |
 King DonovanReporter at Beach House (uncredited) | Reporter at Beach House (uncredited) |
| MMike DonovanPorter (uncredited) | Porter (uncredited) |
 Robert FoulkDetective O'Hara (uncredited) | Detective O'Hara (uncredited) |
| JJim FrasherHigh School Boy (uncredited) | High School Boy (uncredited) |
 Ned GlassDr. Ben Levy, McAdoo's asst. (uncredited) | Dr. Ben Levy, McAdoo's asst. (uncredited) |
 Eula GuyMrs. Fischer (uncredited) | Mrs. Fischer (uncredited) |
| SSherry HallCar Insurance Clerk (uncredited) | Car Insurance Clerk (uncredited) |
