After a road accident in Hungary, the American honeymooners Joan and Peter and the enigmatic Dr. Werdegast find refuge in the house of the famed architect Hjalmar Poelzig, who shares a dark past with the doctor.
| Writing | Edgar G. Ulmer | Story |
| Camera | John J. Mescall | Director of Photography |
| Writing | Peter Ruric | Story |
| Writing | Peter Ruric | Screenplay |
| Directing | Edgar G. Ulmer | Director |
| Production | E.M. Asher | Supervising Producer |
| Production | Carl Laemmle Jr. | Producer |
| Art | Edgar G. Ulmer | Set Designer |
| Art | Charles D. Hall | Art Direction |
| Directing | Sam Weisenthal | Assistant Director |
| Editing | Ray Curtiss | Editor |
| Costume & Make-Up | Edgar G. Ulmer | Costume Design |
| Directing | William J. Reiter | Assistant Director |
| Costume & Make-Up | Jack Pierce | Makeup Artist |
| Sound | Heinz Roemheld | Music |
| Sound | Gilbert Kurland | Sound |
| Writing | Tom Kilpatrick | Screenplay |
| Production | M.F. Murphy | Production Manager |
| Camera | Roman Freulich | Still Photographer |
| Writing | Edgar Allan Poe | Short Story |
