Nick Carter, Master Detective

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.

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

Gene Coogan

Welder

Cedric Gibbons

Art Direction

Edwin B. Willis

Set Decoration

Jacques Tourneur

Director

Carey Loftin

Stunts

Daniele Amfitheatrof

Original Music Composer

Elmo Veron

Editor

Charles Lawton Jr.

Director of Photography

Bertram Millhauser

Story, Screenplay

Douglas Shearer

Sound

Leo Arnaud

Orchestrator

Lucien Hubbard

Producer

Jerry Bresler

Unit Manager

Sandy Roth

Assistant Director

Edward Ward

Original Music Composer

Harold Buckley

Story