
Howard Green Duff (November 24, 1913 – July 8, 1990) was an American actor of film, television, stage, and radio.
Duff was born in Charleston, Washington, now a part of Bremerton. He graduated from Roosevelt High School in Seattle in 1932 where he began acting in school plays only after he was cut from the basketball team. His first film role was as an inmate in Brute Force. His other movies include The Naked City (1948), All My Sons (1948), Calamity Jane and Sam Bass (1949), Panic in the City (1968), In Search of America (1971), A Wedding (1978) and No Way Out (1987).
He appeared in a number of films with his first wife, actress/director Ida Lupino. One of Duff's later performances was as Dustin Hoffman's attorney in the Academy Award-winning Kramer vs. Kramer (1979).
On radio, Duff played Dashiell Hammett's private eye Sam Spade from 1946–1950, starring in The Adventures of Sam Spade on three different networks - ABC, CBS and NBC. In 1951 Steve Dunne took over the role of Sam Spade. Duff also appeared in an episode of Climax! entitled Escape From Fear in 1955.
On television, Duff appeared with his then wife Ida Lupino in the CBS comedy Mr. Adams and Eve from January 1957 through September 1958, in which they played husband and wife film stars named Howard Adams and Eve Drake. He played the young Samuel Langhorne Clemens, in his early life in the West as a satirical and crusading journalist, in the TV series Bonanza ("Enter Mark Twain," season 1, episode 5, 1959). In 1960 he played the male main character in The Twilight Zone episode "A World of Difference" as Arthur Curtis/Jerry Raigan. From October 1960 through April 1961, Duff played Willie Dante, owner of the San Francisco nightclub, Dante's Inferno, in the NBC adventure/drama series Dante. In 1964, Duff guest starred as Harold Baker on the episode "Prodigy" of NBC's medical drama about psychiatry The Eleventh Hour, starring Jack Ging and Ralph Bellamy. In 1990, he guest starred on an episode of The Golden Girls (episode: The Mangiacavallo Curse Makes a Lousy Wedding Present).
From September 1966 through January 1969, Duff portrayed Detective Sergeant Sam Stone in the ABC police drama Felony Squad with costar Dennis Cole. In the 1980s, he appeared on dramas such as NBC's Flamingo Road and Knots Landing, and Dallas, both on CBS.
Ralph Earl / Stephen Earl
Det. Sgt. Sam Stone
Cabala
Captain Thomas Sullivan Magnum I
Arthur Curtis / Gerry Reagan
Harrigan
Dr. John C. Clark
Paul Galveston
Edward J. Marks
Peter Harding
Ed Frazer
Mangiacavallo
Col. Hobey Jabko
Herbie
Lou Cole
Charlie January
Douglas Shane
Senator William 'Billy' Duvall
Denton
Ira Larkin
Keith Ramsey
George Morton
Lt. Burt Kaufman
Police Sgt. Jack Farnham
John Shaunessy
Titus Semple
Det. Sgt. Sam Stone
A.J. Morgan
Sean
Dr. Crane
Lynn D. Compton
Father Martin Finnegan
Joe Stillman
Self
Ben Forbes
Herman Rusk
Johnny Abel
Deputy Marshal Frank Smeed
Doug Duryea
Dan Mallory
Sardanapolo
G. Carter Huntington
Dr. Stephen Mitchell
Jim
Dan Mason
Lester Harlen
Dave Pomeroy in Panic in the City (archive footage)
Robert 'Soldier' Becker
O.M.
Howard Duff
Lieutenant Nicholson
Wolfe Macready
Lionel Rockland
Jules Edwards
Hollister
Raymond Dawson Travers
Narrator
Dr. Jules Meecham
Charles Slade
Sam Bass
Col. Samuel Isaacs
Self (archive footage)
Dunlap
Willie Dante
Doug Jackson
Harry Regan
Frank Niles
Lennie Stone
Steve Quain
Jim Denko
Jess Collins
Jim Hollis
Terence Kerrigan
George Deever
Jack Early
Lin Sloane
Dan Harder
Winfield Sheehan
Dave Pomeroy
Noah Fleck
Mr. Jenkins
Sid Rayner
Bill Thompson
Denton
General
Duncan Wood
Pete Menlo
Tom "Blackjack" Ketchum
Ray Chandler
Sheriff Titus Semple
Bert Powers
Cy Whately
Johnny Tracy
Self - Co-Host
Self
Self
Self