| Gerald Mohr | ... | Michael Lanyard / The Lone Wolf | |
| Janis Carter | ... | Carla Winter | |
| Eric Blore | ... | Jameson | |
| John Abbott | ... | Lal Bara | |
| William B. Davidson | ... | Inspector Crane (as William Davidson) | |
| Don Beddoe | ... | Stonley | |
| Adele Roberts | ... | Rita Hale | |
| Mark Roberts | ... | Dick Hale (as Robert Scott) | |
| Peter Whitney | ... | Harvey Beaumont | |
| rest of cast listed alphabetically: | |||
| Fred Amsel | ... | Room Clerk (scenes deleted) | |
| Eddie Acuff | ... | Detective Jones (uncredited) | |
| David Bond | ... | Room Service Waiter (uncredited) | |
| Symona Boniface | ... | Grand Dame at Airport (uncredited) | |
| Maurice Cass | ... | Asst. Hotel Mgr. (uncredited) | |
| Eddy Chandler | ... | House Detective (uncredited) | |
| Edith Evanson | ... | Olga - Carla's Maid (uncredited) | |
| Bess Flowers | ... | Club Marquis Patron (uncredited) | |
| Lew Harvey | ... | Brooklynese Bystander at Airport (uncredited) | |
| Virginia Hunter | ... | Lili - Nightclub Dancer (uncredited) | |
| Olaf Hytten | ... | Prince of Rapur (uncredited) | |
| Cy Malis | ... | Fireman (uncredited) | |
| Joe Palma | ... | Club Marquis Waiter (uncredited) | |
| Bob Perry | ... | Bystander at Airport (uncredited) | |
| Robert Ryan | ... | Plainclothesman (uncredited) | |
| Jeffrey Sayre | ... | Wheelright's Assistant Jeweler (uncredited) | |
| Billy Snyder | ... | Hotel Night Clerk (uncredited) | |
| John Tyrrell | ... | Pierre, the Chauffeur (uncredited) | |
| Ian Wolfe | ... | Adam Wheelright (uncredited) | |
Directed by | |||
| D. Ross Lederman | |||
Writing credits | ||
| William Bowers | (story) (as William J. Bowers) | |
| Martin Berkeley | (screenplay) | |
| Edward Dein | uncredited | |
| Garrett Graham | adaptation (uncredited) | |
Produced by | |||
| Ted Richmond | .... | producer | |
Cinematography by | |||
| Burnett Guffey | |||
Film Editing by | |||
| Richard Fantl | |||
Art Direction by | |||
| Jerome Pycha Jr. | |||
| Perry Smith | |||
Set Decoration by | |||
| Frank Kramer | |||
Second Unit Director or Assistant Director | |||
| James Nicholson | .... | assistant director | |
Sound Department | |||
| Jack A. Goodrich | .... | sound (as Jack Goodrich) | |
Music Department | |||
| Mischa Bakaleinikoff | .... | musical director | |
| George Duning | .... | composer: stock music (uncredited) | |
| Leigh Harline | .... | composer: stock music (uncredited) | |
| John Leipold | .... | composer: stock music (uncredited) | |
| Clifford Vaughan | .... | composer: stock music (uncredited) | |
Other crew | |||
| Juanita L. Bell | .... | research director (uncredited) | |
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| The Black Widow | The Spider Returns | Leave It to the Irish | The Patient in Room 18 | Making the Headlines |
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| Full cast and crew | Company credits | IMDb Comedy section |
| IMDb USA section |
This Lone Wolf entry introduces Gerald Mohr in the title role... and that's part of the problem. It labors for so long to set up that "this new guy" is the Lone Wolf that it takes a while for the plot to kick in -- it's like they felt they had to convince us that Mohr really is the Wolf, honest! Forget about that Warren William guy! So the first ten to fifteen minutes are rather slow. And Mohr is no Warren William. But he's competent enough and once the story gets going, it's amiable and breezy and fun. All about -- of course -- a stolen gem and the Wolf's attempts to find the real thief (he's blamed, as always). So it's not as good as some of the earlier Warren William Wolfs, but it's not bad, either. Moves along a quick clip and wraps it all up neatly, with some good fun as Mohr and sidekick Blore pretend to be Arab Royalty as they try to find the lost gem.