Sir Borotyn, a prominent Prague resident, is discovered murdered in his home, with all indications pointing to a vampire assault. The victim's friend, Baron Otto, and the physician who analyzes the body, are certain that the vampire is the mysterious Count Mora or his daughter. Receiving little help from the law, Professor Zelen, an expert in the occult, is called in to assist with their investigation.
as Professor Zelin
as Irena Borotyn
as Count Mora
as Inspector Neumann
as Baron Otto
as Fedor Vincente
as Dr. Doskil
as Midwife
as Jan
as Chauffeur
as Maria
as Annie
as Luna
as Sir Karell Borotyn
as Innkeeper
as Coroner (uncredited)
as Fat Man (uncredited)
as Gypsy (uncredited)
as Old Gypsy Woman (uncredited)
