Credits

• 1997 · The Silver Screen: Color Me Lavender as Self (archive footage)
• 1996 · Sad? as (archive footage)
• 1995 · Theremin: An Electronic Odyssey as Don Birnam (archive footage) (uncredited)
• 1989 · Faces of Horror as Maxwell Kirshner (archive)
• 1987 · Grace Kelly: The American Princess as Self (archive footage)
• 1985 · The Sea Serpent as Professor Timothy Wallace
• 1984 · The Masks of Death as Home Secretary
• 1983 · Cave-In! as Prof. Harrison Soames
• 1983 · Starflight: The Plane That Couldn't Land as Q. T. Thornwell
• 1982 · The Royal Romance of Charles and Diana as Mr. Griffiths
• 1982 · Dead Men Don't Wear Plaid as (in "The Lost Weekend") (archive footage)
• 1981 · Our Family Business as Tony
• 1980 · The Attic as Wendell
• 1980 · The Dream Merchants as Lawrence Radford
• 1979 · Hart to Hart as
• 1979 · Game for Vultures as Colonal Brettle
• 1979 · Survival Run as Professor
• 1979 · The Darker Side of Terror as Prof. Meredith
• 1978 · Oliver's Story as Oliver Barrett III
• 1978 · Battlestar Galactica as Sire Uri
• 1978 · Battlestar Galactica as Sire Uri
• 1978 · Blackout as Richard Stafford
• 1978 · Slavers as Hassan
• 1978 · Cruise Into Terror as Dr. Isiah Bakkun
• 1977 · The Pyjama Girl Case as Inspector Thompson
• 1977 · The Love Boat as Peter Bradbury
• 1977 · The Uncanny as Frank Richards
• 1977 · Mayday at 40,000 Feet as Dr. Joseph Mannheim
• 1977 · Oil as Boss Stewart
• 1977 · Seventh Avenue as Douglas Fredericks
• 1977 · The Hardy Boys / Nancy Drew Mysteries as
• 1976 · The Last Tycoon as Fleishacker
• 1976 · Look What's Happened to Rosemary's Baby as Roman Castevet
• 1976 · Charlie's Angels as Oliver Barrows
• 1976 · Rich Man, Poor Man - Book II as Duncan Calderwood
• 1976 · Aces High as Brigadier General Whale
• 1976 · The Swiss Conspiracy as Johann Hurtil
• 1975 · Ellery Queen: Too Many Suspects as Carson McKell
• 1975 · Escape to Witch Mountain as Aristotle Bolt
• 1975 · The Dead Don't Die as Jim Moss / Varrick
• 1974 · Gold as Hurry Hirschfeld
• 1974 · Witness to Murder as Dr. Roger Mann
• 1973 · Terror in the Wax Museum as Harry Flexner
• 1973 · The Big Game as Pete Handley
• 1973 · The House in Nightmare Park as Stewart Henderson
• 1972 · Cool Million as
• 1972 · The Thing with Two Heads as Maxwell Kirshner
• 1972 · Frogs as Jason Crockett
• 1972 · Embassy as Ambassador
• 1971 · Black Noon as Caleb Hobbs
• 1971 · Columbo as Arthur Kennicutt
• 1971 · Columbo as Jarvis Goodland
• 1971 · River of Gold as Evelyn Rose
• 1970 · Love Story as Oliver Barrett III
• 1970 · Company of Killers as George DeSalles
• 1969 · Daughter of the Mind as Prof. Samuel Hale Constable
• 1969 · Bracken's World as
• 1968 · Hostile Witness as Simon Crawford
• 1965 · The Love Goddesses as (archive footage)
• 1964 · The Confession as Mario Forni
• 1963 · X: The Man with the X-Ray Eyes as James Xavier
• 1962 · The Merv Griffin Show as Self
• 1962 · The Alfred Hitchcock Hour as Howard Fennick
• 1962 · Panic in Year Zero! as Harry Baldwin
• 1962 · The Premature Burial as Guy Carrell
• 1961 · The Mike Douglas Show as Self
• 1961 · King of Kings as Satan (voice) (uncredited)
• 1961 · Kraft Mystery Theatre as
• 1959 · Markham as
• 1958 · The Safecracker as Colley Dawson
• 1957 · Suspicion as Roy Markham
• 1957 · High Flight as Wing Commander Rudge
• 1957 · The River's Edge as Nardo Denning
• 1956 · Three Brave Men as Joe DiMarco
• 1956 · Lisbon as Robert John Evans
• 1955 · A Man Alone as Wes Steele
• 1955 · The Girl in the Red Velvet Swing as Stanford White
• 1954 · Dial M for Murder as Tony Wendice
• 1953 · Meet Mr. McNutley as
• 1953 · Let's Do It Again as Gary Stuart
• 1953 · Jamaica Run as Patrick Fairlie
• 1953 · General Electric Theater as Russel Kent
• 1953 · General Electric Theater as Caradoc Williams
• 1953 · General Electric Theater as John
• 1953 · General Electric Theater as Woodward
• 1952 · The Thief as Allan Fields
• 1952 · Something to Live For as Alan Miller
• 1952 · Bugles in the Afternoon as Kern Shafter
• 1951 · Schlitz Playhouse of Stars as Harry Carstairs
• 1951 · Close to My Heart as Brad Sheridan
• 1951 · Rhubarb as Eric Yeager
• 1951 · Night Into Morning as Philip Ainley
• 1951 · Circle of Danger as Clay Douglas
• 1950 · Copper Canyon as Johnny Carter
• 1950 · A Life of Her Own as Steve Harleigh
• 1950 · A Woman of Distinction as Alexander "Alec" Stevenson
• 1950 · What's My Line? as Self - Panelist
• 1950 · What's My Line? as Self - Mystery Guest
• 1949 · The Art Director as Self - from 'The Big Clock' (archive footage) (uncredited)
• 1949 · It Happens Every Spring as Vernon Simpson
• 1949 · Alias Nick Beal as Nick Beal
• 1948 · Miss Tatlock's Millions as Himself
• 1948 · Sealed Verdict as Robert Lawson
• 1948 · So Evil My Love as Mark Bellis
• 1948 · The Big Clock as George Stroud
• 1947 · Variety Girl as Ray Milland
• 1947 · Golden Earrings as Ralph Denistoun
• 1947 · The Trouble with Women as Gilbert Sedley
• 1947 · California as Jonathan Trumbo
• 1946 · The Imperfect Lady as Clive Loring
• 1946 · The Well Groomed Bride as Dudley Briggs
• 1945 · The Lost Weekend as Don Birnam
• 1945 · Kitty as Sir Hugh Marcy
• 1944 · Till We Meet Again as John
• 1944 · Ministry of Fear as Stephen Neale
• 1944 · The Uninvited as Roderick Fitzgerald
• 1944 · Lady in the Dark as Charley Johnson
• 1943 · The Crystal Ball as Brad Cavanaugh
• 1943 · Forever and a Day as Bill Trimble
• 1942 · The Major and the Minor as Philip Kirby
• 1942 · Are Husbands Necessary? as George Cugat
• 1942 · Reap the Wild Wind as Stephen Tolliver
• 1942 · Star Spangled Rhythm as Joe
• 1942 · The Lady Has Plans as Kenneth Clarence Harper
• 1941 · Sullivan's Travels as Near-Collision Man (uncredited)
• 1941 · Skylark as Tony Kenyon
• 1941 · I Wanted Wings as Jeff Young
• 1940 · Arise, My Love as Tom Martin
• 1940 · Untamed as William Crawford
• 1940 · The Doctor Takes a Wife as Timothy Sterling
• 1940 · Irene as Don Marshall
• 1940 · French Without Tears as Alan Howard
• 1939 · Everything Happens at Night as Geoffrey Thompson
• 1939 · Beau Geste as John Geste
• 1939 · Hotel Imperial as Lieutenant Nemassy
• 1938 · Say It in French as Richard Carrington, Jr.
• 1938 · Men with Wings as Scott Barnes
• 1938 · Tropic Holiday as Ken Warren
• 1938 · Her Jungle Love as Bob Mitchell
• 1937 · Wise Girl as John O'Halloran
• 1937 · Ebb Tide as Robert Herrick
• 1937 · Easy Living as John Ball Jr.
• 1937 · Wings Over Honolulu as Richard "Stony" Gilchrist
• 1937 · Bulldog Drummond Escapes as Hugh "Bulldog" Drummond
• 1936 · Three Smart Girls as Lord Michael Stuart
• 1936 · The Jungle Princess as Christopher Powell
• 1936 · The Big Broadcast of 1937 as Bob Miller
• 1936 · The Return of Sophie Lang as Jimmy Dawson
• 1936 · Next Time We Love as Tommy Abbott (as Raymond Milland)
• 1935 · The Glass Key as Taylor Henry
• 1935 · Alias Mary Dow as Peter Marshall
• 1935 · Four Hours to Kill! as Carl Barrett
• 1935 · The Gilded Lily as Charles Gray (Lord Granton)
• 1934 · One Hour Late as Tony St. John
• 1934 · Menace as Freddie Bastion
• 1934 · Charlie Chan in London as Neil Howard
• 1934 · Many Happy Returns as Ted Lambert
• 1934 · We're Not Dressing as Michael Stofani
• 1934 · Bolero as Robert Coray
• 1933 · This Is the Life as Bob Travers
• 1933 · Orders Is Orders as Dashwood
• 1932 · Payment Deferred as James Medland
• 1932 · But the Flesh Is Weak as Mr. Stewart
• 1932 · Polly of the Circus as Church Usher (uncredited)
• 1932 · The Man Who Played God as Eddie (uncredited)
• 1931 · Ambassador Bill as King Lothar
• 1931 · Blonde Crazy as Joe Reynolds
• 1931 · Bought! as Charles Carter Jr.
• 1931 · Just a Gigolo as Freddie
• 1931 · Strangers May Kiss as 3rd Admirer
• 1931 · The Bachelor Father as Geoffrey Trent
• 1930 · Passion Flower as Party Guest with Letter (uncredited)
• 1930 · Way for a Sailor as Ship's Officer
• 1929 · The Informer as Sharpshooter
• 1929 · The Plaything as Ian
• 1929 · The Flying Scotsman as Jim Edwards
• 1929 · The Lady from the Sea as Tom Roberts
• 1929 · Piccadilly as Diner in Nightclub (uncredited)
• 1928 · Moulin Rouge as Theater Patron (uncredited)