O.J. Berman
Howard Simons
Private Det. Milton Arbogast
Frather Howard
Col. Cathcart
Signor Bianchi
Det. Martin Balsam
District Attorney Turrisi
Admiral Husband E. Kimmel
Mr. Merriweather
Police Chief Mark Dutton
Mr. Beamish
Sam McKeever
Green
Paul Girard
Everett Redman
Haskins
Bennett Cross
James Arthur Cummings
Al Vescari
Garth
(archive footage)
Henry Mendez
Mr. Pym
Arnold
Bernard B. Norman
Mac Keeley, reporter
Joe Fiore
Gen. Bello
Ben Kaplan
Bit Part (uncredited)
Sgt. Baker
Dr. Rudy Wells
Sergente Quintino Fornaciari
Lieut Cmdr. Chester Potter, M.D., U.S.N.
Prof. Ruzinsky
Harry
Milton Arbogast (archive footage)
Mayor Wilker
Inspector Jim Grant
Harry Walden
Petrus Lamb
David Franklin
Cliff Dowling
Dr. Samuel Melman
Jack
Rizzo
Commissioner Katroni
Ernie Weinberg
Ben Montgomery
Commissario
Captain Steffanelli
Giulianelli
Commissario Bonavia
Steve Jackson
Uncle Harold
Henry Fancher
Lawyer
Salluzzo
Ivor Belli
Jim Talley
Alexander Rostov
Stanley Pulska
Judge
Sanford Kaufman
Jim Douglas
Gillette (uncredited)
Charlie Malick
Louis B. Mayer
Harry Strasberg
Edward J. Reilly
Joel Aurnou
Dr. Beck
Captain Joe Reardon
Joseph Feinberg
Wade Hamilton
Don Antonio Macaluso
Capt. Caleb Sark
Carlo Goja
Giudice Aldo Sola
Questore Martorana
T.C. Hollister
Arthur Haines
Father Sorendo
Townsman
Priest
Dr. David Harris
Ira Davidoff
Elmer Babcock
Max Silverman
Sheriff Virgil Baker
Isser Harel
Gramps
Grandpa
Dr. Rudy Wells (uncredited) (archive footage)
Daniel Cooper
Michael Todd (voice)
Callaghan (archive footage)
Juror 1
Sidney Rosenberg
Jack Brady
Angie
Francis Toohey
Self
Self (archive footage)
Dr. Arnold Gillespie
Gerald
Edgar Carmody
Jack Garsell
Rockne S. O'Bannon (segment "Personal Demons")
Gil Solarski
Arnold Fleischman
Ray Kaufman
Ed Coyne
Garth
Danny Weiss
Eldon Marsh
Father Fabian
Andrew Newmark
Frank Carrisi
Nick Santos
Frank Eberhardt
Ned Lacey
Floyd Harker
Bernard Maxwell
District Attorney
Prof. Donald Knowles (segment "Voices in the Earth")
Townsman
Sam Butler
Caldwell Wyatt
Captain Russel Barris
Joseph Creeley
soldier
Benny Orloff
Dr. Milton Orloff
Dr. Carl Noyes
Self - Winner
Self
Don Matias Quintero
Senator Glancey
Herb Witmer
Nathan Burkan
Leonard Thompson
Strasberg
Leo Valera
Army Doctor (uncredited)
Francis Toohey
Mike Galloway
Charlie Malick
Dave Breslaw
Jack
Hyam Zgierski