He was born in Cheyenne, Wyo., in 1929. He broke into the entertainment business in 1959 when he wrote the "I'll Take Care of You" episode for "Alfred Hitchcock Presents."
Jack Herer's "The Emperor Wears No Clothes" Premiere
Johnson was a member of the Southern California School of Writers, which included Theodore Sturgeon, William F. Nolan, Charles Beaumont, Richard Matheson and Ray Bradbury. He met "Twilight Zone" producer Rod Serling through them and would go on to write eight episodes for the seminal sci-fi series including "Nothing in the Dark," "Kick the Can," "A Game of Pool" and "A Penny for Your Thoughts."

Johnson sold a short story that would serve as the basis for Frank Sinatra's 1960 movie "Ocean's 11" and the George Clooney-Brad Pitt reboot in 2001. He also wrote episodes for "Route 66," "The Law and Mrs. Jones" and "Kung Fu."

With William F. Nolan, he wrote the dystopian novel "Logan's Run," in which people are executed at the age of 21 and which served as the basis for the 1976 film. He wrote the adapted script for "The Intruder," the 1962 movie directed by Roger Corman, based on the novel by his friend Charles Beaumont. Both appear in the movie along with William F. Nolan.