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.
Joe Palooka is a naive young man whose father Pete was a champion boxer, but his lifestyle caused Joe's mother Mayme to leave him and to take young Joe to the country to raise him.
A cabaret dancer witnesses a murder and is forced to hide from gangsters by disguising herself as a male Princeton student.
