Mark of the Vampire

Baron Otto was one of the first to suggest that Sir Karell's murder was the work of a vampire. He and Dr. Doskil pointed the finger at Count Mora and his daughter Luna, drawing suspicion toward them. However, this was actually part of Otto's plan to frame others for his own crime and deflect attention away from himself.

Earlier, Otto's eagerness to blame others for the murder planted seeds of doubt about his true intentions.

Baron Otto wanted to marry Irena Borotyn, Sir Karell's daughter, but her father refused to grant permission for the marriage. This rejection drove Otto to murder Sir Karell and stage the death to look like a vampire attack, hoping to eliminate the obstacle and possibly claim Irena afterward.

The Baron's insistence on protecting Irena and his keen interest in the investigation masked his personal stake in her father's death.

Zelen used hypnosis on Baron Otto to make him relive the night of the murder. Under hypnosis, Otto recounted the events more freely, which eventually led to the reenactment that exposed his guilt. The hypnotic state lowered his defenses, allowing the truth to surface through his reconstructed actions and words.

Zelen's expertise in the occult and psychology positioned him as the only one capable of accessing the Baron's suppressed memory.

Count Mora and his daughter Luna were convenient suspects because they lived in the castle and had a mysterious reputation. The real killer, Baron Otto, staged the murder to appear as a vampire attack and used the Count's ominous presence as cover. This framing kept suspicion away from Otto while he pursued his actual goal of eliminating Sir Karell.

The Count's dramatic persona and isolated residence made him an easy target for suspicion.

Zelen arranged for an actor to impersonate Sir Karell while a hypnotized Baron Otto was asked to reenact the murder. As Otto performed the crime again, the pressure of the dramatic reconstruction and the presence of witnesses broke his composure. During this intense scenario, he inadvertently revealed his motive and admitted to staging the murder.

The carefully staged reenactment recreated the emotional atmosphere of the original night, triggering Otto's unguarded response.

Professor Zelen hired actors to pose as vampires because he suspected the real killer was using vampire folklore as a cover. By creating a theatrical vampire threat, Zelen hoped to panic the true murderer into making a mistake or confessing. The elaborate ruse was designed to flush out whoever was behind the crimes by making them feel cornered.

Zlen's arrival as an occult expert gave him the credibility to orchestrate such a bold plan.

Inspector Neumann was a rational police officer who dismissed the vampire theory as superstition. He refused to accept supernatural explanations for the murder, maintaining a logical approach to the investigation. His skepticism represented the divide between old-world folklore and modern investigative methods in the story.

Neumann's grounded perspective provided contrast to the escalating supernatural hysteria.

Irena was let in on the secret of the fake vampire charade. She participated in the reenactment alongside Zelen and the actors, helping to stage the second murder scenario. Her cooperation was essential to making the plan work, though her fiancé Fedor was kept unaware until after the truth was revealed.

Irena's willingness to confront danger head-on suggested she had been briefed on the true nature of the investigation.

In the closing scene, Mora jokes that the vampire charade has given him an idea for a new theatrical act, declaring he will be the vampire in future performances. This meta-theatrical quip underscores the film's theme of artifice, as the characters (who were actors playing vampires) now consider using the experience as genuine stage material.

Mora's showman personality was established throughout the film, making this final pitch consistent with his character.