He played Richard Hickock (opposite Robert Blake’s Perry Smith) in the 1967 adaptation of “In Cold Blood”. He was also in “In the Heat of the Night”.
Mr. Wilson appeared in several dozen more films, including “The Great Gatsby” (1974), “The Right Stuff” (1983), “Dead Man Walking” (1995), “The Last Samurai” (2003) and “Monster” (2003).
He played a cruel dog-owner in three movies based on Phyllis Reynolds Naylor’s “Shiloh” novels, and Saint Albert Chmielowski in “Our God’s Brother” (1997), a film adaptation, by the Polish director Krzysztof Zanussiof, of a play written by Pope John Paul II.
Mr. Wilson also had recurring parts on the CBS police procedural “CSI: Crime Scene Investigation” and Netflix’s science fiction drama “The OA.”
Oddly, it doesn’t seem that he ever did a guest shot on “Mannix”.