Characters played by Dennis O'Keefe
Jerry O'Connor
Characters played by Cecilia Parker
Jane Delano
Characters played by Nat Pendleton
Buddy Buttle
Characters played by Harry Carey
P. G. 'Pinky' Delano
Characters played by Addison Richards
Ed Eberhart
Characters played by Charley Grapewin
'Doc' Heath
Characters played by Alan Curtis
Jose 'Rocks' Rivera
Characters played by Tom Neal
'Hank' Hogan
Characters played by Tom Collins
'Lefty' Simmons
Characters played by Frank Orth
Tim 'Mac' McKelvy
Characters played by Frank M. Thomas
Jim Nixon
Characters played by Si Jenks
Mr. Jenkins
Characters played by Clayton Moore
Hospital Interne
Characters played by King Baggot
Race Track Spectator
Characters played by Barbara Bedford
Woman in Movie House
Characters played by Helen Jerome Eddy
Susan - Laboratory Analyst
Characters played by Fred Frame
Race Car Driver
Characters played by Fred Friday
Race Car Driver
Characters played by Roger Gray
Policeman
Characters played by Ronnie Householder
Race Car Driver
Characters played by John Kelly
Towing Man
Characters played by Carey Loftin
Starter
Characters played by Rex Mays
Race Car Driver
Characters played by Louis Meyer
Race Car Driver
Characters played by King Mojave
Rex 'Smitty' Smith
Characters played by Kelly Petillo
Race Car Driver
Characters played by Lee Phelps
Jim Webster - Mechanic
Characters played by Walter Soderling
Mr. Fowler
Characters played by Art Sparks
Race Car Driver
Characters played by Joel Thorne
Race Car Driver
Characters played by Frank Whitbeck
Voice of Newsreel Announcer