Casting et équipe

Ronald ColmanDr. Martin Arrowsmith

Helen HayesLeora Tozer Arrowsmith

Richard BennettGustav Sondelius

A.E. AnsonProfessor Max Gottlieb

Clarence BrooksDr. Oliver Marchand

Alec B. FrancisTwyford

Claude KingDr. Tubbs

Bert RoachBert Tozer

Myrna LoyJoyce Lanyon

Russell HoptonTerry Wickett

David LandauState Veterinarian

Lumsden HareSir Robert Fairland

Erville AldersonPioneer (uncredited)

Ward BondCop (uncredited)

Beulah BondiMrs. Tozer (uncredited)

Florence BrittonMiss Twyford (uncredited)

Nora CecilNurse (uncredited)

Sidney De GrayDr. Hesselink (uncredited)

Cyril DelevantiCommittee Member (uncredited)

WD

Walter DowningCity Clerk (uncredited)

Gibson GowlandCommittee Member (uncredited)

SH

Sherry HallReporter (uncredited)

Theresa HarrisNative Mother (uncredited)

Raymond HattonDrunk (uncredited)

Charlotte HenryPioneer Girl (uncredited)

George HumbertItalian Uncle (uncredited)

DeWitt JenningsB.W. Tozer (uncredited)

Mike LallyReporter (uncredited)

LL

Lillian LawrenceWest Indies Townswoman at Meeting (uncredited)

Carl M. LevinessShip's Passenger (uncredited)

James A. MarcusOld Doctor (uncredited)

Eric MayneDignitary at Luncheon (uncredited)

Kendall McComasLittle Johnny (uncredited)

EM

Edmund MortimerShip's Passenger (uncredited)

John QualenHenry Novak (uncredited)

ER

Edward ReinachDignitary (uncredited)

MR

Milton RoyceIntern (uncredited)

HS

Harry SchultzBartender (uncredited)

Pat SomersetShip's Officer (uncredited)

Adele WatsonMrs. Novak (uncredited)

Bobby WatsonLittle Neighbor (uncredited)

EW

Eric WiltonShip's Officer (uncredited)