 Dick Van DykeJack Albany | Jack Albany |
 Edward G. RobinsonLeo Joseph Smooth | Leo Joseph Smooth |
 Dorothy ProvineSally Inwood | Sally Inwood |
 Henry SilvaFrank Boley | Frank Boley |
 Tony BillFlorian | Florian |
 Slim PickensCowboy Schaeffer | Cowboy Schaeffer |
 Jack ElamAce Williams | Ace Williams |
 Ned GlassRinzy Tobreski | Rinzy Tobreski |
 Richard BakalyanBobby Macoon | Bobby Macoon |
 Mickey ShaughnessyFrancis | Francis |
 Philip CoolidgeFingers Felton | Fingers Felton |
 James MillhollinMuseum Director | Museum Director |
 Joanna MooreMelanie Smooth | Melanie Smooth |
| LLeon AltonExhibit Guest (uncredited) | Exhibit Guest (uncredited) |
 Anthony CarusoTony Preston (uncredited) | Tony Preston (uncredited) |
 John CliffMuseum Guard (uncredited) | Museum Guard (uncredited) |
 Russ ConwayPolice Capt. Jacoby (uncredited) | Police Capt. Jacoby (uncredited) |
 John DennisSecond Museum Guard (uncredited) | Second Museum Guard (uncredited) |
 Ken LynchPolice Lieutenant (uncredited) | Police Lieutenant (uncredited) |
 Jerry ParisPolice Photographer (uncredited) | Police Photographer (uncredited) |
| CClark RossExhibit Guest (uncredited) | Exhibit Guest (uncredited) |
 Jackie RussellSexy woman (uncredited) | Sexy woman (uncredited) |
 Cosmo SardoExhibit Guest (uncredited) | Exhibit Guest (uncredited) |
 Johnny SilverProp Man (uncredited) | Prop Man (uncredited) |
