A young man of society wants to make an expedition to Africa, but his fiancée asks him for help about one of her fathers guests shortly before his planed departure. Her suspects about that guest were serious, this man tries to steal one of her fathers rubin, and she and her fiance are kidnapped and brought to a house, where strange things happen. The whole thing becomes a nightmare under the direction of a mysterious Mr. Satan.
| Writing | Benjamin Christensen | Screenplay |
| Directing | Benjamin Christensen | Director |
| Production | Wid Gunning | Producer |
| Camera | Sol Polito | Director of Photography |
| Costume & Make-Up | Perc Westmore | Makeup Artist |
| Editing | Frank Ware | Editor |
| Sound | Kevin McLeod | Music |
| Writing | Abraham Merritt | Novel |
