Question: What 1985 American horror film based on the Stephen King novella "Cycle of the Werewolf", features Everett McGill in a lead role?
Context: Silver Bullet is a 1985 American horror film based on the Stephen King novella "Cycle of the Werewolf".  It stars Gary Busey, Everett McGill, Megan Follows, Corey Haim, Terry O'Quinn, Lawrence Tierney, Bill Smitrovich, Kent Broadhurst, David Hart, and James Gammon.  The film is directed by Dan Attias and produced by Dino De Laurentiis. The Mist (also known as Stephen King's The Mist) is a 2007 American science-fiction horror film based on the 1980 novella "The Mist" by Stephen King.  The film was written and directed by Frank Darabont.  Darabont had been interested in adapting "The Mist" for the big screen since the 1980s.  The film features an ensemble cast including Thomas Jane, Marcia Gay Harden, Samuel Witwer, Toby Jones, and future "The Walking Dead" actors Jeffrey DeMunn, Juan Gabriel Pareja, Laurie Holden, and Melissa McBride. Secret Windows: Essays and Fiction on the Craft of Writing is a collection of short stories, essays, speeches, and book excerpts by Stephen King, published in 2000.  It was marketed by Book-of-the-Month Club as a companion to King's "".  Although its title is derived from a King novella ("Secret Window, Secret Garden"), it is not otherwise related to that novella or the film adaptation, "Secret Window". Lester Lowe is a fictional character in the Stephen King universe.  He appears in the novella "Cycle of the Werewolf" and the film "Silver Bullet".  The story and plight of Lowe is inspired by the ancient folklore tale of the "Werewolf Priest", although Lowe himself is actually a Baptist reverend. Pet Sematary (sometimes referred to as Stephen King's Pet Sematary) is a 1989 American horror film adaptation of Stephen King's novel of the same name.  Directed by Mary Lambert and written by King, the film features Dale Midkiff as Louis Creed, Denise Crosby as Rachel Creed, Blaze Berdahl as Ellie Creed, Miko Hughes as Gage Creed, and Fred Gwynne as Jud Crandall.  Andrew Hubatsek was cast for Zelda's role.  King, who scripted from his own book, also has a cameo as a minister. The People Under the Stairs is a 1991 American horror film written and directed by Wes Craven and starring Brandon Adams, Everett McGill, Wendy Robie, A. J. Langer, Ving Rhames and Sean Whalen. Children of the Corn (also known as Stephen King's Children of the Corn) is a 1984 American horror film based upon the 1977 short story of the same name by Stephen King.  Directed by Fritz Kiersch, the film's cast consists of Peter Horton, Linda Hamilton, John Franklin, Courtney Gains, Robby Kiger, Anne Marie McEvoy, and Julie Maddalena.  Set in the fictitious rural town of Gatlin, Nebraska, the film tells the story of a malevolent entity referred to as "He Who Walks Behind the Rows" which entices the children of the town to ritually murder all the adults in town and a couple driving across country, to ensure a successful corn harvest. Martin Coslaw is a fictional character in the Stephen King universe.  He appears in the novella "Cycle of the Werewolf" and the film "Silver Bullet".  Coslaw, the primary protagonist of both the novella and the film, is a paraplegic.  He was portrayed by Corey Haim in the film. Everett McGill (born Charles Everett McGill III, October 21, 1945) is an American actor, who first rose to prominence for his portrayal of a neanderthal in "Quest for Fire" (1981).  He went on to have prominent roles in films like "Dune" (1984), "Silver Bullet" (1985), "Heartbreak Ridge" (1986), "Licence to Kill" (1989), "The People Under the Stairs" (1991) and "" (1995). Cat's Eye (also known as "Stephen King's Cat's Eye") is a 1985 American anthology horror film directed by Lewis Teague and written by Stephen King.  It comprises three stories, "Quitters, Inc.", "The Ledge", and "General".  The first two are adaptations of short stories in King's "Night Shift" collection, and the third is unique to the film.  The three stories are connected only by the presence of a traveling cat, which plays an incidental role in the first two and is a major character of the third.
Answer: Silver Bullet