Walter Pidgeon

Nicholas 'Nick' Carter, aka Robert Chalmers

Rita Johnson

Lou Farnsby

Henry Hull

John A. Keller

Stanley Ridges

Doctor Frankton (as Stanley C. Ridges)

Donald Meek

Bartholomew, the bee man

Addison Richards

Streeter - President of Radex

Henry Victor

Hammil - tall spy boss

Milburn Stone

Krebs - 2d hurt worker

Martin Kosleck

Otto - 3d hurt worker

Frank Faylen

Pete Foley - 1st pilot

Sterling Holloway

Bartholomew's Bee Asst.

Edgar Dearing

Harbor Patrol Sgt. Denny

Don Brodie

Engel - X-49 Workman

Eddy Chandler

Joe - Blueprint Security Officer

Gene Coogan

Welder

Paul Ellis

Faber - Henchman

Bud Geary

Seaman on Yacht

Chuck Hamilton

Entrance Guard

Edward Hearn

Deputy

Kenner G. Kemp

Student

Richard Lane

Sam Vaughn

Carey Loftin

Minor Role

Wilfred Lucas

Police Detective Randall

George Meeker

Hartley

Roger Moore

Streeter's Secretary

William Newell

Taxi Driver

Gil Perkins

Factory Workman

Lee Phelps

Riley - Airplane Workman

Richard Terry

Cain - Henchman

Harry Tyler

Locker Room Attendant