"A 13-year-old brainiac invents an ingenious listening device, which he uses to bring a crooked city official and his pals to justice"
Edward Andrews
as Mayor Massey
John Fiedler
as Charles Blackburn
Lonny Chapman
as Fred Benson
Eric Shea
as Alvin Fernald
Clay O'Brien
as Shoie
Kim Richards
as Daphne 'Daffy' Fernald
Ted Gehring
as Doyle Reager
Lynn Borden
as Miss Pinkney
Claude Johnson
as Mr. Fernald
Bebe Kelly
as Mrs. Fernald
Maudie Prickett
as Mrs. Hundley
George O'Hanlon
as Herb Evans
Molly Dodd
as Mrs. Blake
Hal Smith
as Ed Haskins
Dick Wilson
as Mr. Hodges
Larry J. Blake
as Police Chief
Norman Bartold
as Sam Preston
Judson Pratt
as Sgt. O'Halloran
Brian Morrison
as Shorty
Ed Prentiss
as Commissioner
Rae Dawn Chong
as Greta
Marshall Kent
as City Engineer
Chuck Sullivant
as Worm
Peter Renaday
as Reporter
Olive Dunbar
as Mrs. Barkley
Tom Leetch
Director
Herman Groves
Teleplay
Clifford B. Hicks
Book
Co-Producer
Ron Miller
Producer
Robert F. Brunner
Music
Charles F. Wheeler
Director of Photography
Ray de Leuw
Editor
Robert Clatworthy
Art Direction
John B. Mansbridge
Hal Gausman
Set Decoration
John A. Kuri
Frank R. McKelvy
Chuck Keehne
Costume Design
La Rue Matheron
Hairstylist
Robert J. Schiffer
Makeup Artist