Lee Powell

Lieutenant Tom Grayson

Bruce Bennett

Lieutenant Frank Corby

Eleanor Stewart

Janet Warfield

Montagu Love

General White

Hugh Sothern

Ben Warfield

Sam Flint

Colonel Grayson

Perry Ivins

Crenshaw

Forrest Taylor

Benson

John Picorri

Professor Gould

Carleton Young

Johnson, 'Aurora' Crewman

John Davidson

Lin Wing

Henry Otho

Sam Hedges, the Gardener

Reed Howes

Parker--Sub Crewman

Tom London

Henchman Wilson

Edmund Cobb

Henchman Ellis

John English

William Witney