As American policemen in London, Bud and Lou meet up with Dr. Jekyll and Mr. Hyde.
| Directing | Charles Lamont | Director |
| Writing | John Grant | Screenplay |
| Writing | Lee Loeb | Screenplay |
| Writing | Robert Louis Stevenson | Novel |
| Production | Howard Christie | Producer |
| Camera | George Robinson | Director of Photography |
| Editing | Russell F. Schoengarth | Editor |
| Art | Bernard Herzbrun | Art Direction |
| Art | Eric Orbom | Art Direction |
| Costume & Make-Up | Rosemary Odell | Costume Design |
| Costume & Make-Up | Jack Kevan | Makeup Artist |
| Costume & Make-Up | Joan St. Oegger | Hairstylist |
| Art | Russell A. Gausman | Set Decoration |
| Costume & Make-Up | Bud Westmore | Makeup Department Head |
| Writing | Sid Fields | Story |
| Writing | Grant Garett | Story |
| Costume & Make-Up | Ray Romero | Makeup Artist |
| Costume & Make-Up | Abe Haberman | Makeup Artist |
