Thelma and Patsy find themselves in a spooky house inhabited by a nut who is a mechanical genius and has made a robot that does everything. The inventor manipulates the robot's control board from a hidden room. The girls are soon in a panic. Patsy gets into an argument with the robot and loses the match of wits. Blackie Burke, an escaped convict, is using the house as a hideout, which adds to the girls' problems.
—Les Adams <longhorn1939@suddenlink.net>