Walter Pidgeon
Nicholas 'Nick' Carter, aka Robert Chalmers
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.
Wally Maher
Cliff Parsons - Keller's Pilot & Asst.
Edgar Dearing
Harbor Patrol Sgt. Denny
Ernie Alexander
Factory Workman
Louis V. Arco
Yacht Captain
Frank Ball
Peake the Gardener
Don Brodie
Engel - X-49 Workman
Don Castle
Ed - 1st Hurt Worker
Eddy Chandler
Joe - Blueprint Security Officer
Paul Ellis
Faber - Henchman
Chuck Hamilton
Entrance Guard
Wilfred Lucas
Police Detective Randall
Joseph P. Mack
Draughtsman
Roger Moore
Streeter's Secretary
William Newell
Taxi Driver
Gil Perkins
Factory Workman
Lee Phelps
Riley - Airplane Workman
Lee Prather
Police Captain
Charles Sherlock
Keller's Driver
Harry Templeton
Police Driver
Richard Terry
Cain - Henchman
Harry Tyler
Locker Room Attendant
Charles Flynn
Factory Workman
