(written from a Production point of view)
Henderson, a native of Los Angeles, California, is best known for playing Officer O'Hara on the classic television sitcom, Car 54, Where Are You?, which aired from 1961 through 1963. He also in the 1968 film Madigan, starring TOS guest actors Michael Dunn, Lloyd Haynes, and Steve Ihnat.
In 1973, he had a supporting role in the acclaimed crime drama Serpico, which also featured F. Murray Abraham. Other films in which Henderson appeared include Coogan's Bluff (1968, with Seymour Cassel), The Pursuit of Happiness (1971, starring Michael Sarrazin), The Reincarnation of Peter Proud (1975, also starring Michael Sarrazin), The Postman Always Rings Twice (1981, with John Colicos and Christopher Lloyd), Barfly (1987, with Alice Krige), Big Top Pee-Wee (1988, with Kenneth Tobey), Three Fugitives (1989, with Alan Ruck, Bruce McGill, Tim de Zarn, Brian Thompson, and Sherman Howard), Trancers II (1991, with Jeffrey Combs), and Mr. Jones (1991, with Thomas Kopache).