The boys are sent to a mountain camp. Stranded in a small rural town, they hear about a "monster killer" roaming the countryside. At night, they sneak out. Peewee is shot by a grave-digger, and they are forced to seek aid at an old mansion. The owner of the mansion (Lugosi), insists that the boys spend the night. After seeing PeeWee walk around the house in a trance, the boys decide that the man turned him into a zombie. They gang up on him and tie him up. The nurse at the boys camp (Dorothy Short) sets out to find the missing boys with Von Grosch (Dennis Moore), who has come to rid the town of the killer- or has he?

A young man finds out that his parents had been used in an atomic-weapons experiment shortly before he was born, and that the results have had some unexpected effects on him.

Mismatched travellers are stranded overnight at a lonely rural railway station. They soon learn of local superstition about a phantom train which is said to travel these parts at dead of night, carrying ghosts from a long-ago train wreck in the area. The travelers eventually get to the bottom of the things that go bump in the night. In between the scary bits, comedian Arthur Askey plays the gags with his Vaudeville style humor, to the constant irritation of his fellow passengers.

A series of strange deaths takes place in London. All are accidents but the victims are single men with no family and they all have a link to a life insurance company run by the mysterious Dr. Orloff.

Dr. Carruthers feels bitter at being betrayed by his employers, Heath and Morton, when they became rich as a result of a product he devised. He gains revenge by electrically enlarging bats and sending them out to kill his employers' family members by instilling in the bats a hatred for a particular perfume he has discovered, which he gets his victims to apply before going outdoors. Johnny Layton, a reporter, finally figures out Carruthers is the killer and, after putting the perfume on himself, douses it on Carruthers in the hopes it will get him to give himself away. One of the two is attacked as the giant bat makes one of its screaming, swooping power dives.

A young man arrives at his father's mansion in Louisiana to discover that a secretive cult is using winged creatures to raise the dead to do their bidding.

A giant alligator runs riot in a small town with a lake connected to a sewer/drainage system. Typical plot; nobody believes the sightings until lots of people have been killed.