Seance for a Vampire

"Wealthy British aristocrat Ambrose Altamont hires Sherlock Holmes to expose two suspect psychics. During the ensuing seance Altamont's deceased daughter Louisa reappears as a vampire - and Sherlock Holmes vanishes. With time running out, Watson feels he has no choice but to summon the only one who might be able to help - Holmes's vampire cousin, Prince Dracula..."--Back cover.