By the early 1900s, the extraordinary Houdini earned an international reputation for his theatrical tricks and daring feats of extrication from shackles, ropes, handcuffs and... Scotland Yard's jails.
| Actor | Role |
|---|---|
 Tony CurtisHarry Houdini | Harry Houdini |
 Janet LeighBess Houdini | Bess Houdini |
 Torin ThatcherOtto | Otto |
 Angela ClarkeHarry's Mother | Harry's Mother |
 Stefan SchnabelGerman Prosecuting Attorney | German Prosecuting Attorney |
 Ian WolfeMalue | Malue |
 Sig RumanSchultz | Schultz |
 Michael PateDooley | Dooley |
 Connie GilchristMrs. Shultz | Mrs. Shultz |
| MMalcolm Lee BeggsBritish Jail Warden | British Jail Warden |
 Frank OrthMr. Hunter | Mr. Hunter |
 Barry BernardInsp. Marlick | Insp. Marlick |
 Douglas SpencerSimms | Simms |
| LLeslie SketchleyAudience Member | Audience Member |
 Joanne GilbertGirl | Girl |
| DDaniel de JongheDesk Clerk (uncredited) | Desk Clerk (uncredited) |
| CCharles FogelOfficial (uncredited) | Official (uncredited) |
| JJoe GilbertRestaurant Patron (uncredited) | Restaurant Patron (uncredited) |