Ralph Morgan

as Nugget Jack

as Andrew Willard

as Maj. Randolph McIvor

as Dr. Lester Cavigny

as Don Adolfo Rivera

as Dr. Rhinehart

as Charlie Mason

as David Thayar

as Ed Jamison

as Dr. Henry Jordon

as Dr. Lane

as B.B. Lavish

as Prof. Franklin Arnold

as Mr. Quandt

as Dr. Miller

as Sam Wallace

as Anthony Lawrence

as Prof. Millard Sawtelle

as Col. DeBoivin

as George Brett

as Ralph Morgan

as Jan Hanka

as John Scott Ryder

as Kurt Ingston

as Morrison

as Dr. Clayton Maxton

as Dr. Brady

as Alan Rogers

as J.P. Morton

as Sen. Cummings

as Dr. Charles Downer

as Producer Walter Blake

as Peterson

as Judge Joseph M. Williams

as Gen. Steele

as John Clayton

as Timothy Reed Sr.

as Colonel Whalen

as Stephen F. Austin

as Nicholas Torrent

as Spiro Gregory

as Martin Sands

as Bill Northcote

as Howard Barclay

as Kennett

as John Hale

as Capt. John Carey

as Shaw MacAllen

as Briggs

as Reginald 'Reggie' Odell

as Nicholas Pryor

as Carter

as Commander of Paris

as Horace Mitchell

as John Borden

as The 'Professor'

as John R. Flemyng

as Yankee General

as James Foster / Anderson

as Debrulle

as Gerald Dexter

as District Attorney Carey

as Mr. Dean

as Leroy Hutchins, War Cloud's Owner

as Jim Glenray

as Randolph

as Paul Kristan

as Kenneth S. Rockwell

as Roger Classon

as Mike Monahan

as John Waring

as Lt. 'Pop' Roget

as Herbert Rosson

as Wesley Sinton

as Stanley Vane

as Dr. Portman

as Secretary to President

as Henry Loring, Cabot's lawyer

as Father

as Dr. Richard Czinner

as Professor Bhaer

as Raymond Wrede

as Judge Penfield

as J. Gordon Ritchie

as Henry

as Dr. Verney

as Li Po Chang

as Azrah

as Dr. William MacDonald

as Charlie Marsden

as Czar Nicholas II

as Fang Fou Hy

as Captain Geoffrey Maitland

as James Crawford

as Dr. Sullivan

as Freddie Isquith

as Barry Kirk

as Alex Prentice

as Riggs (uncredited)

as Edwin Macauley Jr

as Tom Oliphant

as Raymond Floriot