Walter Connolly

John Forrester aka Eric Jann aka Peter Korotoff

Doris Kenyon

Margaret Forrester

Robert Young

Jack Forrester

Scotty Beckett

Jack Forrester, Age 4

Henry Kolker

Carlo - the Puppeteer

Akim Tamiroff

Peter Korotoff

Gilbert Emery

Professor Weaver

George Humbert

Niccoli

Hobart Bosworth

Alec Klein

Macon Jones

Jack Forrester - Age 14

Rollo Lloyd

Henry Braverman

Maidel Turner

Henrietta Crosland

Hugh Huntley

Jamison - Ship's Officer

Yale Puppeteers

Puppeteers

Walter Brennan

Clifford (uncredited)

Walter Lang