Characters played by Broderick Crawford
Rollo Lamar
Characters played by Ralph Meeker
Gerry Barker
Characters played by Reed Hadley
Special FBI Agent James Madden
Characters played by William Talman
'Machine Gun' Mason
Characters played by Lon Chaney Jr.
Alamo Smith
Characters played by Charles Bronson
Benny Kelly
Characters played by Felicia Farr
Emily Evans
Characters played by Roy Roberts
Chief Ranger Will Erickson
Characters played by Willis Bouchey
Robertson Lambert
Characters played by Peter J. Votrian
Danny Lambert
Characters played by Robert Bray
Ranger McCormick
Characters played by William Boyett
Ranger at Park Exit
Characters played by Nelson Leigh
Madden's FBI Supervisor
Characters played by Gregg Martell
Accomplice on Fishing Boat
Characters played by Bill McLean
Dipsy
Characters played by Jan Merlin
Tommy
Characters played by Joe Ploski
Convict
Characters played by Stafford Repp
Prison Warden Machek
Characters played by Harry Wilson
Inmate Who Starts Fight