Bruce Cabot
— Jim Larch / Jim Adams
Ralph Byrd
— Dr. Ben Cameron
Zasu Pitts
— Lilly Handy
Tommy Ryan
— Mickey Larch / Mickey Adams
Jessie Ralph
— Veronica Hudson
June Storey
— Sheila Roberts
Benny Bartlett
— Joe Fisher
J. Farrell MacDonald
— Sheriff J.J. Willoughby
John Qualen
— Mailman
Robert Elliott
— FBI Agent Farrow
Scotty Beckett
— Bobby
James Flavin
— Sanders
Archie Twitchell
— Shelby, the Bus Driver