When in doubt, drag out the "old dark house/mad scientist" formula. That's the philosophy of Master Minds, the 16th entry in Monogram's "Bowery Boys" series. It all begins when Sach (Huntz Hall), suffering from a toothache, develops the ability to read minds. Sach's pal Slip (Leo Gorcey), knowing a good thing when he sees one, exploits Sach's talents on the carnival-sideshow circuit. Soon, however, the demented Dr. Druzik (Alan Napier) comes calling, hoping to transplant Sach's brain into the body of ape-man Atlas (Glenn Strange). This film's funniest moments occur when the hulking Glenn Strange imitates Huntz Hall's familiar gestures and body language.