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Mayday at 40,000 Feet!

1976
as Captain Pete Douglass

Smile Jenny, You're Dead

1974
as Harry Orwell

Lafayette Escadrille

1958
as Duke Sinclair

Harry O

1974
as Harry Orwell

Macho Callahan

1970
as Diego Callahan

Hijack!

1973
as Jake Wilkenson

Hell to Eternity

1960
as Sgt, Bill Hazen

Never Say Goodbye

1956
as Dave Heller

Night Chase

1970
as Adrian Vico

Belle Sommers

1962
as Danny Castle

Francis in the Haunted House

1956
as Police Lieutenant Hopkins

Toy Tiger

1956
as Larry Tripps

Inchon

1982
as David Feld

The Longest Night

1972
as Alan Chambers

The Fugitive

1963
as Dr. Richard Kimble

Moon of the Wolf

1972
as Sheriff Aaron Whitaker

O'Hara, U.S. Treasury

1971
as Jim O’Hara

City in Fear

1980
as Vince Perrino

The Green Berets

1968
as George Beckworth

The Square Jungle

1955
as Jack Lindsay

Warning Shot

1967
as Sgt. Tom Valens

High Ice

1980
as Glencoe MacDonald

Where It's At

1969
as A.C. Smith

Centennial

1978
as Narrator, Paul Garrett

Marooned

1969
as Ted Dougherty

Cult of the Cobra

1955
as Rico Nardi

Francis in the Navy

1955
as Lt. Anders

Once Is Not Enough

1975
as Tom Colt

The Golden Gate Murders

1979
as Det. Sgt. Paul Silver

Francis Goes to West Point

1952
as Cpl. Thomas (as Dave Janssen)

Golden Rendezvous

1977
as Charles Conway

Chief Crazy Horse

1955
as Lt. Colin Cartwright

Twenty Plus Two

1961
as Tom Alder

Yankee Buccaneer

1952
as Beckett

S.O.S. Titanic

1979
as John Jacob Astor

Man-Trap

1961
as Vince Biskay

Stalk the Wild Child

1976
as Dr. James Hazard

Generation

1969
as Jim Bolton

Police Story

1973
as Sgt. Joe Wilson

Pioneer Woman

1973
as Robert Douglas

The Swiss Conspiracy

1976
as David Christopher

Superdome

1978
as Mike Shelley

Biography

1961
as Presenter (1979)

My Six Loves

1963
as Marty Bliss

The Word (1978)

1978
as Steve Randall

The Girl He Left Behind

1956
as Capt. Genaro

Dondi

1961
as Dealey

Director

Movie Bikini Squad 1993

Guest Star

Episode Cannon
He Who Digs a Grave (1)
1973
Episode Cannon
He Who Digs a Grave (2)
1973
Episode Zane Grey Theater
Hang The Heart High
1959
Episode Zane Grey Theater
Trail To Nowhere
1958
Episode Route 66
One Tiger to a Hill
1962
Episode The Eleventh Hour
Make Me a Place
1962
Episode Mystery Science Theater 3000
Space Travelers
1992
Episode Mystery Science Theater 3000
Superdome
1989
Episode Checkmate
Ride a Wild Horse
1962
Episode Zane Grey Theater
There Were Four
1957
Episode Adventures in Paradise
Show Me a Hero
1961
Episode Zane Grey Theater
Trial By Fear
1958
Episode Naked City
A Wednesday Night Story
1961
Episode Naked City
On the Battlefront, Every Minute Is Important
1963
Episode The Schlocky Horror Picture Show
Moon Of The Wolf (1972)
2007
Episode Cain's Hundred
Inside Track
1962
Episode The Tim Conway Comedy Hour
Barbara Feldon, David Janssen
1970
Episode The Tonight Show starring Johnny Carson
Frank Sinatra, Don Rickles, David Janssen, Olivia Newton-John, Ray Johnson
1976