Robert Langford Modini Stack (January 13, 1919 – May 14, 2003) was a multilingual American actor and television host. In addition to acting in more than 40 films, he also appeared on the television series The Untouchables and later served as the host of Unsolved Mysteries.
Born in Los Angeles, California, Stack spent his early childhood growing up in Europe. Becoming fluent in French and Italian at an early age, and he did not learn English until returning to Los Angeles. Stack achieved minor fame in sporting, winning multiple championships including setting two world records and winning multiple honors in skeet shooting
Stack studied drama at Bridgewater State College, earning his first hollywood role at the age of 20 and continuing to star in numerous roles throughout the early 1940s.
After serving in the military, Stack returned to Hollywood to star in numerous films including stand out roles in The High and the Mighty (opposite John Wayne) and Written on the Wind (1957), for which he was awarded an Academy Award for Best Supporting Actor.
Stack later moved on to televised dramatic series, depicting the crime-fighting Eliot Ness in The Untouchables (1959–1963), which earned him a best actor Emmy Award in 1960. Stack also starred in multiple drama series, before returning to film, this time in comedies to satirize his famed stoic and humorless demeanor.
He began hosting Unsolved Mysteries in 1987, and served as the show's host throughout it's entire original run from 1987 to 2002.
Reynolds Penland (voice) (uncredited)
Chester Harrison
Bret Garrett
Peter McReynolds
Agent Briggs
Narrator (voice)
Host
Dan Farrell
Roland Saunders
Lewis Blackwood
Charles Vandoor
Eliot Ness
Bob (voice)
Mark MacPherson
Self
Self
Ralph Saunders
Ben Barton
Self
Robert Stack
First Man
Self - Intermission Guest
Stoat Muldoon (voice)
Robert Stack (uncredited)
Kyle Hadley
Angelo (Businessman)
Vic Flint
Captain Rex Kramer
Captain Linc Evers
George Lancaster
Captain Frank Murphy
Ultra Magnus (voice)
Agent Flemming (voice)
Robert Stack
General Stark
Maj. Gen. Joseph W. Stilwell
Dr. Ellison
General Sibert
Superintendent (voice)
Patrick O´Moore
MacGregor
Captain Larkin
John Sullivan
Lieut. Stanislav Sobinski
Chandler Young
Kyle Hadley
Winslow
Roger Shumann
Himself
Self
Dr. Tommy Baker
Narrator (voice) (archive sound)
Jim Beckley
(archive footage)
Mr. Gardner
Stephen Andrews
Louis Faciano
Cliff Henderson
Eddie Kenner
John Paul Jones
Self
John Regan
Otto Von Rohn
Self
Lt. Billings
Jordan White
Self
Capt. Stuart L. Hamilton
Bob Hayward
Maj. Tom Burke
Michael Rhodes
The Gooch
Jim Holliday
Self
Captain Charles Wogan
Owen Pentecost
Eliot Ness
Eliot Ness
Self (archive footage)
Chuck S. Brewer
Cliff Wilder
Ted Drake
Lt. Littleboy (voice)
Capt. James Morgan
Self (archive footage)
Self
Dr. Donovan MacLeod
Self
Sumner Ethridge
David Frasier
Don Webb
William 'Bill' Beck
Barry Conovan
Mark Macpherson
Self
Col. Gil Manton
Host - Narrator
Jeff Blake
Self
Drew Hammond
James Andrew Congers
Bob Terry
François Davis
Host
Nickey Van Alen
Bob - Factory worker
Self
Self (archive footage)
Self
Mark McPherson
(archive footage)
Himself
Self - Co-Host
Self
Self
Self / Bo Bo McGoon
Self
Self (archive footage)
Self
Self - Presenter
Major Morgan
James Andrew Congers
Self
Host
Self - Cameo
Self