Silver Bullet is a 1985 American horror film based on the 1983 Stephen King novella Cycle of the Werewolf. It stars Corey Haim, Gary Busey, Everett McGill, Megan Follows, Terry O'Quinn, Lawrence Tierney, Bill Smitrovich, Kent Broadhurst, David Hart, and James Gammon. The film is directed by Dan Attias, written by King and produced by Dino De Laurentiis.
The rocky relationship between Jane Coslaw, the film's narrator, and her paraplegic younger brother Marty changes after a series of murders in their small rural town of Tarker's Mills, Maine, starting in the spring of 1976.
Railroad worker Arnie Westrum is decapitated by an unseen attacker, pregnant Stella Randolph prepares to kill herself but is brutally murdered in her own bedroom, an abusive father is killed in his greenhouse, and Marty's best friend, Brady Kincaid, is also killed. After Brady's death, citizens form a vigilante justice group. Although local Sheriff Joe Haller attempts to stop the citizens, he relents after Brady's father Herb berates him. Reverend Lester Lowe fails to dissuade the townsfolk from causing further bloodshed.
While the vigilantes hunt for the killer in the nearby woods, three are attacked and killed. The survivors - especially Andy Fairton - later deny seeing anything unusual. Afterwards, Reverend Lowe dreams that he is presiding over a mass funeral when his congregation – including the bodies in the caskets – begins to transform into werewolves before his eyes and attack him. He awakens screaming and asks God to "let it end."
Because of the mounting unsolved murders, curfews are put in place, canceling the town’s Fourth of July celebration. The Coslaws decide to have their own backyard party and invite their mother Nan's alcoholic brother, Red. Red gives Marty a custom-built wheelchair/motorcycle, which he nicknames the "Silver Bullet," as well as a pile of fireworks so he can have his own celebration. Marty uses the Silver Bullet to go out in the middle of the night to a bridge where he lights the fireworks. The fireworks get the werewolf's attention, and it confronts him, but he escapes after launching a rocket into the creature's eye.
Marty enlists Jane's help to look for someone with a newly injured or missing eye. She discovers that Reverend Lowe is missing his left eye. Realizing that no adult would believe his story, Marty begins sending anonymous notes to Reverend Lowe telling him that he knows who he is, what he is, and that he should commit suicide in order to stop the killings. Lowe tries to run Marty off the road with his car. When Marty is trapped under a closed covered bridge, Lowe, whose condition has fractured his sanity, tries to rationalize the murders he has committed as doing God's work. Lowe apologizes and moves in for the kill until Marty calls for help from a passerby.
The siblings manage to convince Red that Lowe is connected to the murders and attempted to kill Marty. Red persuades Sheriff Haller to investigate. That night, Haller, still skeptical but desperate to find the killer, goes to Lowe's house and finds Lowe has locked himself in his garage to restrain himself from further killings. Before Haller can arrest him, Lowe transforms and bludgeons Haller to death with a baseball bat.
Knowing the werewolf is coming for them next, Marty and Jane convince Red to take Jane's silver cross and Marty's silver medallion to the gunsmith, who melts them down into a silver bullet.
On the night of the full moon, they wait for the werewolf, who cuts the power to the house and smashes its way inside, attacking Red. The bullet is nearly lost in the melee, but Marty is able to retrieve it and shoots the werewolf in the right eye. The corpse turns back into Lowe before dying. As the trio recover, Marty and Jane say they love each other and embrace, and Jane narrates that although she hadn't always been able to say it, she was able to say it from then on.