"The O'Leary brothers -- honest Jack and roguish Dion -- become powerful figures, and eventually rivals, in Chicago on the eve of its Great Fire."
Tyrone Power
as Dion O'Leary
Alice Faye
as Belle Fawcett
Don Ameche
as Jack O'Leary
Alice Brady
as Molly O'Leary
Andy Devine
as Pickle Bixby
Brian Donlevy
as Gil Warren
Phyllis Brooks
as Ann Colby
Tom Brown
as Bob O'Leary
Sidney Blackmer
as General Phil Sheridan
Berton Churchill
as Senator Colby
June Storey
as Gretchen
Paul Hurst
as Mitch
Tyler Brooke
as Specialty Singer
J. Anthony Hughes
as Pat O'Leary
Gene Reynolds
as Dion O'Leary (as a boy)
Bobs Watson
as Bob O'Leary (as a boy)
Billy Watson
as Jack O'Leary (as a boy)
Madame Sul-Te-Wan
as Hattie
Spencer Charters
as Commissioner W.J. Beavers
Rondo Hatton
as Rondo - Body Guard
Thelma Manning
as Carrie Donahue
Ruth Gillette
as Miss Lou
Eddie Collins
as Drunk
Scotty Mattraw
as Beef King
Joe Twerp
as Stuttering Clerk
Clarence Wilson
as Lawyer
Frank Dae
as Judge
Harry Stubbs
as Fire Commissioner
Joe King
as Ship's Captain
Francis Ford
as Driver
Bob Murphy
as Police Officer
Wade Boteler
Gustav von Seyffertitz
as Dutch - Politician in Jack's Office
Russell Hicks
as Politician in Jack's Office
Brooks Benedict
as Courtroom Spectator (uncredited)
George Chandler
as Onlooker (uncredited)
Bess Flowers
as Woman with Colby (uncredited)
Vera Lewis
as Wedding Witness (uncredited)
Bert Moorhouse
as Opening Night Guest (uncredited)
William H. O'Brien
as Senate Waiter (uncredited)
Martin Turner
as Refugee
Lamar Trotti
Screenplay
Sonya Levien
Henry King
Director
Niven Busch
Story
Barbara McLean
Editor
Rudolph Sternad
Art Direction
Darryl F. Zanuck
Producer
Royer
Costume Design
Thomas Little
Set Decoration
Robert D. Webb
Assistant Director
William S. Darling
J. Peverell Marley
Director of Photography
Louis Silvers
Music Director
Kenneth Macgowan
Associate Producer
Booth McCracken
Unit Manager
Eugene Grossman
Sound
Roger Heman Sr.
Yakima Canutt
Stunts