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 perhaps his daughter, but receive little help from the law. Professor Zelen, an expert in the occult, is called in to assist with the investigation.
Ruth Raymond works on the switchboard and her boyfriend is John Blake. It has taken 14 years, but a detective named Murray has found her and confirmed.
In the Austrian manor of Baron and Baroness von Burgen, the relationship between the upstairs aristocracy and the downstairs staff is quite positive. The servants seem to enjoy their time together, and some even fall in love, as head butler Albert and maid Anna have done. But when lecherous new chauffeur Karl Schneider enters the house, affairs and blackmail follow, and the harmony of the home is slowly destroyed.
Convicted of manslaughter for a drunken driving accident, Kent Marlowe is sent to prison, where he meets vicious incarcerated figures who are planning an escape from the brutal conditions.
