He adapted two novels into films: A Stranger Is Watching by Mary Higgins Clark was adapted into the 1982 film of the same name and the 1967 young adult novel The Black Pearl by Scott O'Dell into the 1977 film of the same name.
He transformed two novels into movies: "A Stranger Is Watching" by Mary Higgins Clark was adapted into the 1982 film of the same name, and Scott O'Dell's young adult novel "The Black Pearl" was adapted into the 1977 movie with the same title.