[1] In 1964, he played a gang member in "Memo from Purgatory", an episode of the television series The Alfred Hitchcock Hour written by Harlan Ellison and featuring actors James Caan and Walter Koenig.

His character was an apparent drug addict who kidnaps an infant at gunpoint and Officer Malloy disarms him by some reverse psychology.

[6] From September 1970 until May 1971, King played attorney Aaron Silverman on the drama The Young Lawyers, broadcast on the ABC television network.

In 1981 he was featured as Baelon, a rescue team leader in Roger Corman's cult SF horror film, Galaxy of Terror.

King was married for 46 years to writer/producer Patricia Louisianna Knop, with whom he collaborated on many projects, including the scripts for Wild Orchid and 9½ Weeks.