"Roy Martin aka Roy Morgan is a burglar and former war-time Radio & Electronics Engineer who listens in to radio police calls, allowing him to stay one step ahead of the cops."
Richard Basehart
as Roy Martin / Roy Morgan
Scott Brady
as Police Sgt. Marty Brennan
Roy Roberts
as Police Captain Breen
Whit Bissell
as Paul Reeves
James Cardwell
as Police Sgt. Chuck Jones
Jack Webb
as Lee Whitey
Reed Hadley
as Narrator (voice) (uncredited)
Frank Cady
as Pete Hammond
Dorothy Adams
as Milk Customer
Jane Adams
as Nurse Scanion (uncredited)
Jack Bailey
as Witness in Pajamas and Robe (uncredited)
Alma Beltran
as Miss Montalvo (uncredited)
Robert Bice
as Detective with Capt. Breen (uncredited)
Dolores Castelli
as Witness (uncredited)
George Chan
as Chinese Suspect (uncredited)
Garrett Craig
as Patrolman (uncredited)
John Dehner
as Assistant Bureau Chief (uncredited)
Ann Doran
as Dispatcher (uncredited)
Rex Downing
as Young Hoodlum (uncredited)
Michael Dugan
Paul Fierro
as Spanish-Speaking Detective (uncredited)
Byron Foulger
as Freddie (uncredited)
Kay Garrett
as Doctor (uncredited)
Tim Graham
as Uniformed Sergeant (uncredited)
Kit Guard
as Suspect (uncredited)
Harry Harvey
as Liquor Store Proprietor (uncredited)
Thomas Browne Henry
as Dunning (uncredited)
Peter Hobbes
as Milkman (uncredited)
Virginia Hunter
as Miss Smith (uncredited)
Felice Ingersoll
as Records Clerk (uncredited)
Anthony Jochim
Stan Johnson
as Artist (uncredited)
Louise Kane
as Mrs. Rawlins (uncredited)
Tommy Kelly
as Redhead (uncredited)
Donald Kerr
as Mailman (uncredited)
Charles Lang
as Policeman (uncredited)
Lyle Latell
as Police Sergeant (uncredited)
Rory Mallinson
as Detective with Harry (uncredited)
Billy Mauch
as Handsome (uncredited)
John McGuire
as Officer Robert Rawlins (uncredited)
Charles Meredith
as Hollywood Police Official (uncredited)
Carlotta Monti
as Miss Montavio (uncredited)
Bert Moorhouse
as Detective (uncredited)
Howard Negley
as Lt. Greeson (uncredited)
James Nolan
as Harry (uncredited)
John Parrish
Steve Pendleton
John Perri
Paul Scardon
Kenneth Tobey
as Detective Questioning Pete (uncredited)
Wally Vernon
as Postman (uncredited)
Harlan Warde
as Police Operator 27 (uncredited)
Mary Ware
as Reeves' Secretary (uncredited)
Robert B. Williams
Harry Wilson
as Prison Inmate (uncredited)
Robert Kane
Producer
Leonid Raab
Original Music Composer
Harry Essex
Additional Dialogue
Alfred DeGaetano
Editor
Crane Wilbur
Story
Alfred L. Werker
Director
John C. Higgins
Screenplay
Bryan Foy
John Alton
Director of Photography
Leon Becker
Sound
Howard W. Koch
Assistant Director
Lester Shorr
Camera Operator
Ern Westmore
Makeup Artist
Armor Marlowe
Set Decoration
Edward L. Ilou
Art Direction
Joe Stinton
James T. Vaughn
Production Supervisor
Clarence Steensen
Hugh McDowell Jr.
Stewart Stern
Other