Cast & crew
Mysterious Intruder (1946)
Directed by William Castle Written by Eric Taylor
Cast
| Nina Vale | Joan Hill, Gale's Secretary |
| Richard Dix | Don Gale |
| Barton MacLane | Detective Taggart |
| Harlan Briggs | Mr. Brown |
| Helen Mowery | Freda Hanson |
| Pamela Blake | Elora Lund |
| Regis Toomey | James Summers |
| Mike Mazurki | Harry Pontos |
| Charles Lane | Detective Burns |
| Paul E. Burns | Edward Stillwell |
| Kathleen Howard | Rose Denning |
| Jessie Arnold | Woman in Window (Uncredited) |
| Jack Carrington | Bartender (uncredited) |
| Eddy Chandler | Cop in Squad Car (Uncredited) |
| Kernan Cripps | Kelly (uncredited) |
| Stanley Blystone | Henry (uncredited) |
| Otto Forrest | The Whistler (Voice) (Uncredited) |
| Selmer Jackson | Dr. Connell (Uncredited) |
| Charles Jordan | Desk Clerk (uncredited) |
| Edith Evanson | Mrs. Ward (Uncredited) |
| Martín Garralaga | Detective (uncredited) |
| Harry Strang | Police Desk Sergeant (uncredited) |
| Donald Kerr | Reporter (uncredited) |
| Joe Palma | Police Guard Outside Stillwell's Store (Uncredited) |
| Dan Stowell | Reporter (uncredited) |
| Arthur Space | Davis (uncredited) |
| Isabel Withers | Miss Gordon (Uncredited) |
Crew
| William Castle | Director |
| Philip Tannura | Director of Photography |
| Eric Taylor | Screenplay |
| Rudolph C. Flothow | Producer |
| Eric Taylor | Story |
| George Duning | Original Music Composer |
| Carl Hiecke | Assistant Director |
| J.S. Westmoreland | Sound Mixer |
| Jack Haynes | Sound |
| Hans Radon | Art Direction |
| Robert Priestley | Set Decoration |
| Dwight Caldwell | Editor |
| Wilbur Hatch | Original Music Composer |
| James Goss | Camera Operator |
| Mischa Bakaleinikoff | Music Director |
| Mario Castelnuovo-Tedesco | Additional Music |
| Paul Sawtell | Additional Music |
| Juanita L. Bell | Researcher |