Victor McLaglen as Jeems O'Shea

Edmond O'Brien as J. Quincy 'Penji' Pennant

June Havoc as Dolly Smythe

Dorothy Lovett as Sally Dean

Eddie Foy Jr. as Mr. Billy Meeker

Damian O'Flynn as Oliver Lindsay

Marten Lamont as Chick Parker

Roy Gordon as Dr. Wayne

Marion Martin as Sue, Blonde Piano Player

Mary Gordon as Mrs. Douglas

Frances E. Neal as Carol

Julie Warren as Betty

Jane Woodworth as Helen

George Cleveland as Gus the Janitor

John McGuire as Harvey Dodge

Murray Alper as Joe the Cab Driver (uncredited)

Walter Baldwin as Jerry the Nitrate Technician (uncredited)

Stanley Blystone as Security Guard Shooting Gun (uncredited)

Bobby Barber as Waiter (uncredited)

Selmer Jackson as Mr. Tuttle (uncredited)

Frank McLure as Sarcastic Test Observer (uncredited)

Frank Mills as Beer Drinker at Bar (uncredited)

Netta Packer as Mr. Tuttle's Secretary (uncredited)

Jack Perry as Henchman at Dice Table (uncredited)

Charles Schaeffer as Charlie the Bartender (uncredited)

Carl Sklover as Man at Dice Table (uncredited)

Tom Steele as Truck Driver / Henchman (uncredited)

Sammy Stein as Henchman (uncredited)

Sally Wadsworth as Miss Wood, Dr. Wayne's Receptionist (uncredited)