Roy Thinnes (; born April 6, 1938) is an American television and film actor best known for his portrayal of lonely hero David Vincent in the ABC 1967–68 television series The Invaders. He starred in the 1969 British science fiction film Journey to the Far Side of the Sun (also known as Doppelgänger), and also played Manhattan District Attorney Alfred Wentworth in the pilot episode of Law & Order. Career Early roles His first primetime role was in "A Fist of Five", a 1962 episode of The Untouchables, as a brother of an ex-policeman (played by Lee Marvin). Later that year he appeared in a small role as a cowboy named “Harry” on James Arness’s TV Western Gunsmoke (“False Front” - S8E15). He appeared on General Hospital as the "philandering Dr. Phil Brewer" from 1963–65, which was later described as "Thinnes' big break." In 1964, he guested twice in episodes "Murder by Scandal" and the "Lost Lady Blues" of the 13-episode CBS drama The Reporter. Later he co-starred as Ben Quick in the short-lived 1965-66 television series The Long Hot Summer, which ran on ABC. During its run he received around 1,500 letters per week and appeared on the cover of TV Guide The Invaders During 1967 and 1968, Thinnes starred in The Invaders, a TV series in which he portrayed an architect named David Vincent who accidentally witnessed the arrival of aliens from another planet. Vincent waged a seemingly hopeless one-man campaign against them. The series became a cult classic, leading to other 'aliens vs earthlings' films and TV shows. His then-future second wife, actress Lynn Loring, appeared in the show's 14th episode, The Panic. Decades after the unexpected cancellation of the original series, He returned in 1995 as a much older David Vincent, as part of a TV mini-series titled The Invaders (starring Scott Bakula), and a decade later provided audio commentary for the official DVD releases of The Invaders. The Washington Post noted in 2008 that, although The Invaders "ran for just two seasons ... in 2004, TV Guide placed main character David Vincent at #6 on its 25 Greatest Sci-Fi Legends list." In 2019, U.S. basic-cable network MeTV began running weekly reruns of The Invaders as part of its popular "Red-Eye Sci-Fi Saturday Night" overnight late Saturday evening/early Sunday morning sci-fi TV series programming schedule. Post-Invaders In another short-lived series, Thinnes had the lead role on