A seemingly charitable soup kitchen operator (who moonlights as a criminology professor) uses his Bowery mission as a front for his criminal gang. Police attempt to close in on the gang as they commit a series of robberies, murders and bizarre experiments on corpses.
It is prior to the commencement of World War II, and Japan's fiendish Black Dragon Society is hatching an evil plot with the Nazis. They instruct a brilliant scientist, Dr. Melcher, to travel to Japan on a secret mission. There he operates on six Japanese conspirators, transforming them to resemble six American leaders. The actual leaders are murdered and replaced with their likeness.
During World War II, a small plane somewhere over the Caribbean runs low on fuel and is blown off course by a storm. Guided by a faint radio signal, they crash-land on an island. The passenger, his manservant and the pilot take refuge in a mansion owned by a doctor. The quick-witted yet easily-frightened manservant soon becomes convinced the mansion is haunted by zombies and ghosts.
Dr. Paul Carruthers is frustrated because he thinks his employers, Mary Heath and Henry Morton, have cheated him out of the company's profits. He decides to get revenge by altering bats to grow twice their normal size and training them to attack when they smell a perfume of his own making. He mixes the perfume into a lotion, which he offers as a gift to Mary and Henry. When they turn up dead, a newspaper reporter decides to investigate.
Dr. Bernard Adrian is a kindly scientist who seeks to cure a young woman's polio. He needs human spinal fluid to complete the formula for his experimental serum. Meanwhile, a vicious circus ape has broken out of its cage, and is terrorizing the townspeople. Can there be a connection?
A young beauty queen travels to New York to further her modelling career, but contracts syphilis after being tricked into a sexual encounter. She is torn between the prospect of a slow, intensive but proven therapy and a supposed miracle cure.
The story is set in Cambodia in the years following WWI. An evil count has come into possession of the secret methods by which men can be transformed into walking zombies and uses these unholy powers to create a race of slave laborers. An expedition is sent to the ruins of Angkor Wat, in hopes of ending the count's activities once and for all. Unfortunately, one of the members of the expedition has his own agenda.
Ebenezer Scrooge, the ultimate Victorian miser, hasn't a good word for Christmas, though his impoverished clerk Cratchit and nephew Fred are full of holiday spirit. In the night, Scrooge is visited by spirits of the past, present, and future.
An ex-vaudeville actor is working as the assistant to a doctor who has Frankenstein aspirations. The ex-vaudeville actor kills the doctor and decides to assume the identity of the dead physician.
The heirs to a family fortune are required to attend a seance at the spooky old family mansion. However, throughout the night members of the family are being killed off one by one.
When a movie actor is shot and killed during production, the true feelings about the actor begin to surface. As the studio heads worry about negative publicity, one of the writers tags along as the killing is investigated and clues begin to surface.