Gangsters free one of their colleagues being escorted to prison and kill several FBI agents and local police officers in the attempt. FBI agent Melvin Purvis puts together a special squad to track down and capture the men responsible.
Melvin Purvis
Dale Robertson
Charles Arthur 'Pretty Boy' Floyd
Bo Hopkins
Police Commissioner Herbert Tucker McElwaine
Scott Brady
Verne Miller
Matt Clark
Sam Cowley
John Karlen
Vi Morland
Lynn Loring
Adam Richette
Robert Walden
Lester Gillis 'Baby Face' Nelson
Elliott Street
Frank 'Jelly' Nash
Mills Watson
John Lazia
Harris Yulin
Capt. Jackson
Philip Bruns
John Dillinger
William Jordan
Wilma Floyd
Sally Kirkland
Alvin 'Creepy' Karpis
Morgan Paull
Jimmie Floyd
Ike Eisenmann
Garth
James Gammon
Parker
Max Kleven
Boss Stinger
Don Megowan
Ivers
Sandy Ward
Homer Van Meter
Brion James
Harry Pierpoint
Larry Manetti
Tom Pendergast
W.T. Zacha
Doc Barker
Gary Sandy
Fred Barker
Hunter von Leer
Larry De Vol
Jim Storm