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

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

Frank Ball
Peake the Gardener

Don Brodie
Engel - X-49 Workman

Don Castle
Ed - 1st Hurt Worker

Eddy Chandler
Joe - Blueprint Security Officer

Gene Coogan
Welder

Paul Ellis
Faber - Henchman

Bud Geary
Seaman on Yacht

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

Lee Phelps
Riley - Airplane Workman

Charles Sherlock
Keller's Driver

Andrew Tombes
Robinson

Harry Tyler
Locker Room Attendant