Robert Lowery

Joe Martin

Anne Gwynne

Jane Jennings

Edward Brophy

Pete Purdy

Marcia Mae Jones

Betty - Fender's Secretary

Douglas Fowley

Frederick P. 'Fred' Fender

Maude Eburne

Grandma

William Forrest

Deputy Fire Chief / Narrator

Steve Pendleton

Murph, the undercover man (as Gaylord Pendleton)

Byron Foulger

Thomas Peyson

Matt McHugh

Hubbell

Emmett Vogan

Al, Night Watchman

John Maxwell

Detective

John Forsythe

Race Track Aannouncer (voice, uncredited)