Ralph Bellamy

James Morse

Randolph Duke / Homeless Man #1 (uncredited)

Randolph Duke

Dr. Sapirstein

Bill Graves

Dr. Gunther

Grant

Bruce Baldwin

Colonel Montford

Mr. Gower (segment "Titan Man")

Dan Leeson

Lieutenant Everett

Ralph Bellamy

Sam Raven

Erik Ernst

Self

Bruce Baldwin (archive footage) (uncredited)

Congressman Frank R. Reid

Judge

Steve Adams

Al Holland

Stephen Arden

Grandfather Frank

Johnny Franks

Clarence P. Fletcher

Raymond Dower

Lance Rogers

Albert Dennison

Dr. Matthew Pearce

Dr. Kenyon Walker

Jake Porter

Abgarus

John Bradley

Self (archive footage)

Harry Lincoln

William E. Ryker

Franklin Delano Roosevelt

Allen Macklyn

Dr Ladd

Dr. Quentin Harden

Self

George Fleetwood

Fredrik Sobieski

Smith

Jack Marbury

Dr. R.L. Davis

Dr. Paul Hallet

John Baxter

Dr. James Blake / 'Slick' Rawley

Ben Frelinghuysen

Col. Edwin E. Aldrin

Arthur Hale

Lt. Brad Williams

Douglas Proctor

Self

Ellery Queen

Walter Preston

Ben Blodgett

Captain Ebbing

Captain Blake

Barry Eldon

Jonathan Waring

Owen Wright

J.R. 'Al' McLean

Ellery Queen

Ellery Queen

Philip Chester (archive footage) (uncredited)

Ellery Queen

Bill Childers

Capt. Fitzsimmons

John Ed

Stanley

Daniel S. 'Dan' Bailey

J.F. Van Avery

Mike Miller

Doug Sanborn

U.N. Ambassador Adlai Stevenson

McCreary

C. Elliott 'C.F.' Friday

Self (archive footage)

Dr. Barclay

Mac

Dr. Shelby

Eric Whittenson

Judge Hansen

Dr. Henderson

Judge Blake

Dr. Holden

Ezra Louthin

Brian Kent

Sen. Christi

Phillip Chester

Insp. Steve Trent

Major Lamphere

Jeff

Bruce Fairchild

J.L. Dundeen

Steve Andrews

George Mathews

Insp. Steve Trent

Miles Larson

Kirk Duncan

(archive footage)

Russ Matthews

Captain Tom Manning

Self - Announcing Next Week's Show

Insp. Steve Trent

Narrator

Hal

Theron

McVea

Lambertson

Stowaway

Sir Edward Dominey / Baron Leopold von Ragenstein

Self

Curt Hayden

Agent Scott Langham

Dr. Martin Kelog

Michael Hendragin

Eddie Hanneman

Commissioner Robert Edmonds

Terry Gallagher

Jim Dunlap

Narrator

Jim Steele

Johnny Pierce

'Speed' Hardy

John Bruce

John Vickery

Deene Maxwell

Narrator

Self (uncredited)

Insp. Steve Trent

Narrator

Self

Self

Joel Todd

Dr. L Richard Starke

Arnold Hamilton

Captain Jennerson

Self

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-

Todd McNeill

-

Alan Dreeben

Morgan Tate

Wendall Burke

(segment "Monsters!")

-

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August Redding

Self

-

Tice Collins

Dr. L. Richard Starke

Self

Willard Mitchell

Cal Phillips

Judge Quince

Self

Dobson

Detective Thorpe

Self - Presenter

Phillip Hardecker, Sr.

President Franklin Delano Roosevelt

Mike Barnett

Dr. Martin Kelog

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Governor Tom Barker

Sheriff Bassett

Pastor Anderson

Paul Stidham

-

-

Col. Tom Wheeler

Joe McQuade

President Franklin Delano Roosevelt

-

Adlai Stevenson - US Ambassador to UN

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-

Cyrus Blain

Moses Bellman

Ed Caldwell

Col. Andy Morgan

Lowell Baxter

Jerome Patterson

Lee Messenger

Ethan Arcane

Dr. Jim Spaulding