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After inventing a special mind-reading helmet, college student Merlin Jones (Tommy Kirk) learns of a crime a local judge (Leon Ames) is secretly plotting to commit. When the police won't listen, Merlin teams up with his girlfriend (Annette Funicello), and the two manage to sneak into the judge's house looking for evidence of criminal behavior. When the judge turns out to be a crime novelist rather than an actual criminal, Jones realizes that his invention could use a little work. Wikipedia