Spooks Run Wild (1941)

The boys are sent to a mountain camp. Stranded en route 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, forcing them 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, taking up with Von Grosch (Dennis Moore) who has come to rid the town of the killer - or has he?