 Bonita GranvilleNancy Drew | Nancy Drew |
 John LitelCarson Drew | Carson Drew |
 James StephensonChallon | Challon |
 Frankie ThomasTed Nickerson | Ted Nickerson |
 Frank OrthCaptain Tweedy | Captain Tweedy |
| HHelena Phillips EvansMary Eldredge | Mary Eldredge |
 Renie RianoEffie Schneider | Effie Schneider |
 Charles TrowbridgeHollister | Hollister |
 Dick PurcellKeiffer | Keiffer |
 Edward KeaneAdam Thorne | Adam Thorne |
 Mae BuschMiss Tyson | Miss Tyson |
 Tommy BuppSpud Murphy (uncredited) | Spud Murphy (uncredited) |
 Betty Jane GrahamBrinwood Student (uncredited) | Brinwood Student (uncredited) |
 Stuart HolmesTelegrapher (uncredited) | Telegrapher (uncredited) |
 Vera LewisMiss Van Deering (uncredited) | Miss Van Deering (uncredited) |
 Jack MowerRadio Station Technician (uncredited) | Radio Station Technician (uncredited) |
 John RidgelyRadio Station Technician (uncredited) | Radio Station Technician (uncredited) |
| CCliff SaumFarmer (uncredited) | Farmer (uncredited) |
| JJoanne TreeStudent with Black Hat (uncredited) | Student with Black Hat (uncredited) |
 Brandon TynanRay Spires (uncredited) | Ray Spires (uncredited) |
| LLottie WilliamsMrs. Ray Spires (uncredited) | Mrs. Ray Spires (uncredited) |
 Tom WilsonBrennan (uncredited) | Brennan (uncredited) |
