
A 13-year-old brainiac invents an ingenious listening device, which he uses to bring a crooked city official and his pals to justice

as Mayor Massey

as Charles Blackburn

as Fred Benson

as Alvin Fernald

as Shoie

as Daphne 'Daffy' Fernald

as Doyle Reager

as Miss Pinkney

as Mr. Fernald

as Mrs. Fernald

as Mrs. Hundley

as Herb Evans

as Mrs. Blake

as Ed Haskins

as Mr. Hodges

as Police Chief

as Sam Preston

as Sgt. O'Halloran

as Shorty

as Commissioner

as Greta

as City Engineer

as Worm

as Reporter

as Mrs. Barkley