Dirty Harry novels of the four first "Dirty Harry" films as tie-ins. Author and screenwriter Phillip Rock wrote the novelization of "Dirty Harry" in 1971, based on an early draft of the script. Mel Valley wrote the sequel, "Magnum Force", in 1973. Wesley Morgan novelized "The Enforcer" in 1976. The "Sudden Impact" novelization was written by Joseph Stinson, one of the screenwriters. Stinson, who had rewritten the originally independent script as a "Dirty Harry" vehicle for Eastwood, adapted the novel in 1983. Following "The Enforcer", Eastwood announced that he would not make any further "Dirty Harry" films (he eventually returned to the role
Clint Eastwood in the 1980s best westerns in a long, long time". Gene Siskel of the "Chicago Tribune" said, "This year (1985) will go down in film history as the moment Clint Eastwood finally earned respect as an artist". In 1986, Eastwood starred in the military drama "Heartbreak Ridge", about the 1983 U.S. invasion of Grenada, West Indies, with a portion of the movie filmed on the island itself. It co-starred Marsha Mason. However, the title comes from the Battle of Heartbreak Ridge in the Korean War, based around Eastwood's character of Tom Highway, an ageing United States Marine Gunnery Sergeant and Korean War veteran,