Ralph Byrd as Dick Tracy

Irving Pichel as Nicolas Zarnoff

Ted Pearson as Agent Steve Lockwood

Walter Miller as Henchman Robal

George Douglas as Henchman Sandoval

Kenneth Harlan as FBI Chief Clive Anderson [Chs. 13-15]

Robert Carson as Agent Scott

Julian Madison as Agent Foster

Ted Mapes as Agent Dan Murchison

Jennifer Jones as Gwen Andrews

William Stahl as Agent Bruce

Robert Wayne as Agent Wilbur

Joe McGuinn as Henchman Tom

Ken Terrell as Henchman Ed

Harry Humphrey as Warden Stover

Harrison Greene as Baron

Broderick O'Farrell as Russell

George Allen as Barge Crewman

Ed Brady as Jonas

Robert Brister as Dr. Kranz

Earle D. Bunn as Al

George Burton as Henchman

Budd Buster as Cappy

Louis Caits as Jerry the Human Fly

Ed Cassidy as Yacht Captain

James Cassidy as Mr. Collins

Allan Cavan as 2nd Warden

Eddie Cherkose as Thug in Ghost Town

George Cleveland as Gramps Williams

Edmund Cobb as Lt. Reynolds

Tris Coffin as Emissary Zobar (uncredited)

Russell Collier as Police Dispatcher

Ken Cooper as Gus

Alan Davis as Capt. Link

George DeNormand as Jack

Charles Dorety as Barge Thug

Curley Dresden as Thug on Boat

James Fawcett as Thug in House

Joseph Forte as Stanton

Jerry Frank as Jake

Charles K. French as Doctor

Milton Frome as Officer

Bud Geary as Ben

Ray Harper as Martin

Robert Hartford as Gus

Barry Hays as Johnson

Edward Hearn as Forest Ranger

Reed Howes as Slim

Charles Hutchison as Brandon

Lloyd Ingraham as Judge Stoddard

Perry Ivins as Emissary Telef

Bob Jamison as Thug at Truck

Ray Johnson as Phony Gas Station Attendant

Jack Kenney as Ward

Ethan Laidlaw as Pete

William Lally as Thug in Ghost Town

Harry Lang as Barossa

Raymond Largay as FRussell

Bert LeBaron as Thug at Lighthouse

John Locke as Newscaster

Carey Loftin as Trooper on Foot

Merrill McCormick as Green's Assistant

Millard McGowan as Thug at Hangar

Sammy McKim as Sammy Williams

Frank Meredith as Officer Duffy

Walter Merrill as Junior Officer

Bruce Mitchell as Prison Guard

John Moloney as Tim

Monte Montague as Bayside Dock Thug

Charles Murphy as Stopes

Bill Nestell as Thug in Truck

Frank O'Connor as Army Captain

Eddie Parker as Bayside Dock Thug

Edward Peil Sr. as Price

Charles Phillips as Thug on Barge

Allen Pomeroy as Bayside Dock Thug

Stanley Price as Dr. Shang

Jack Raymond as Gus Fleming

Charles Regan as Thug at Dam

Jack Roberts as Lenny Slade

Dick Rush as Police Sergeant

Bigelow Sayre as Davis

Fred Schaefer as Bayside Dock Thug

Gilman Shelton as Joe

Charles Sherlock as Car 14 Trooper

Lee Shumway as Burke

Cy Slocum as Thug in House

Tom Steele as Lighthouse and House Thug

Charles Sullivan as Brody

Bernard Suss as Emissary Lassen

Josef Swickard as Presidente Huenemo Mendoza

Al Taylor as Launch Henchman

Forrest Taylor as Mr. Stevens

Bob Terry as Benton

Sailor Vincent as Intern

Peter von Ziegler as Green

Herman E. Webber as James Robinson

Wally West as Henchman in Office

Bill Wilkus as Thug at Hangar

Bud Wolfe as Bill / 3rd Ghost Town Thug

Bill Yrigoyen as Howard

Joe Yrigoyen as Barge Crewman