James Newill

RCMP Sgt. Renfrew

Louise Stanley

Madeleine Lewis

Dewey Robinson

Uncle Dinwiddie

William Pawley

Morgan

Joe De Stefani

Professor Burton Lewis

Jim Farley

Inspector Warner

Dave O'Brien

Constable Kelly

Karl Hackett

Hawthorne

Ted Adams

Henchman Gary

Dwight Frye

Speavy

Jack Rube Clifford

Whispering Smith

Bob Terry

Henchman Hutchins

Kenne Duncan

Henchman Brownie

Eddie Fetherston

Pilot Buzz Murphy

Don Brodie

Radio Operator

Ralph Staub