This intriguing tale tells the story surrounding the investigation into a series of mysterious deaths. When Scotland Yard's standard police inquiry fails, Gustav, a "paranormal investigator," is called in. Gustav determines that the murderess is a vampire; in fact, she is a vampire who once bit Gustav, thus endowing him with paranormal abilities. Not only does Gustav have a mystery to solve but he also has an old score to settle. Using his supernatural skills, Gustav succeeds in trapping the murderess and having his revenge.