Louis Mann as Adolf

Robert Montgomery as Nick Higginson

Elliott Nugent as Johnnie

Leila Hyams as Alma

Clara Blandick as Martha Wagenkampf

Mary Doran as Laura

Francis X. Bushman Jr. as Ludwig

Robert McWade as Joe Higginson

Dell Henderson as Ted Baldwin

Henry Armetta as Tony

Jane Reid as Katherine

James Donlan as Bide Taylor

Jeane Wood as Muriel Stokes

Lee Kohlmar as Dr. Heinrich Schmidt

Philippe De Lacy as Rudolph Wagenkampf as a Child (uncredited)

Jack Baxley as Tom - Inventory Taker (uncredited)