Dreamcatcher

Four childhood friends from Derry, Maine, share a bond that grants each a faint psychic ability. Gary "Jonesy" Jones, a history professor, senses hidden truths. Pete Moore, a car salesman, finds lost objects by visualizing what he calls "the line." Joe "Beaver" Clarendon, a carpenter, picks up stray thoughts. Henry Devlin, a psychiatrist, reads people with uncanny acuity. Their shared motto is SSDD, "Same Shit, Different Day." Each man struggles privately: Beaver with a painful divorce, Pete with alcoholism, Henry with suicidal depression, and Jonesy with the aftermath of a near-fatal car accident in March 2001 that shattered his hip.

Their abilities trace back to 1978, when the boys discovered a boy with Down syndrome named Douglas "Duddits" Cavell being tormented by older bullies. Despite being younger and smaller, they confronted the ringleader, Richie Grenadeau, and rescued Duddits. Beaver calmed him by singing a lullaby, and they walked him home to his mother, Roberta Cavell. A lasting friendship began: The boys walked Duddits to school for years and discovered that proximity to him heightened their psychic abilities. Duddits became their "dreamcatcher," the center that held them together. Their connection also channeled darker impulses; the boys shared a dream of Grenadeau dying in a car crash, and Grenadeau did die that way.

Every November the four gather at Hole in the Wall, Beaver's cabin in the remote Jefferson Tract of Maine, for deer hunting. In November 2001, a lost hunter named Richard McCarthy stumbles out of the woods. His camp is 50 miles away, four of his teeth are missing without his knowledge, a reddish patch grows on his cheek, and he produces horrific flatulence smelling of ether and overripe bananas.

Meanwhile, Henry and Pete encounter a woman sitting motionless in the snow-covered road on their drive back from a supply run. Henry swerves, and the Scout rolls over, badly injuring Pete's knee. The woman, Becky Shue from a missing hunting party, screams "They're back!" when strange lights appear overhead. Henry drags her to a shelter and sets out on foot for the cabin, leaving Pete to watch her. Pete, unable to resist his addiction, leaves Becky to retrieve beer from the overturned vehicle.

At the cabin, McCarthy dies behind a locked bathroom door, his lower body torn open. Something alive splashes in the toilet bowl beneath him while a reddish-gold alien fungal growth called byrus spreads across the room. Beaver sits on the lid to trap the creature while Jonesy searches for tape, but while Jonesy is gone, a legless, weasel-like parasite with needle-sharp teeth escapes and kills Beaver.

The last surviving gray alien's head then explodes in front of Jonesy, releasing a cloud of byrus spores he inhales. The spores allow an entity called Mr. Gray to take possession of Jonesy's body. Jonesy does not disappear entirely: He retreats into a mental sanctuary he visualizes as the old Tracker Brothers office from his childhood, a room with a locked door Mr. Gray cannot breach. This kernel of consciousness persists because of Jonesy's unique immunity to the byrus, linked to his connection to Duddits and his near-death experience.

Mr. Gray heads south on a snowmobile, killing Pete by telepathically commanding the byrus on his body to crush his skull. Henry, arriving at the cabin, discovers Beaver's corpse, shoots the remaining weasel, burns the cabin, and begins a grueling ski trek toward Gosselin's Market.

The military response is led by Abraham Kurtz, a ruthless commander who plans to massacre all quarantined civilians to contain the alien threat. Kurtz establishes a base at Gosselin's Market, detaining residents and hunters behind electrified fences. His second-in-command, Owen Underhill, harbors growing moral doubts and defies Kurtz by broadcasting the aliens' surrender pleas so his men can hear them, an act Kurtz secretly marks as unforgivable.

Henry, now a prisoner in the compound, telepathically contacts Owen and reveals that the real threat is Jonesy, who is carrying Mr. Gray toward a water supply. The byrus is dying in Earth's environment; only Jonesy, uniquely altered by Duddits and his accident, can serve as the host. Owen agrees to escape with Henry. Henry broadcasts images of the planned massacre into the detainees' minds, triggering a mass breakout, and Owen detonates thermite charges on generators. The two escape in a Sno-Cat while the compound descends into chaos.

Mr. Gray drives south, killing people to acquire vehicles. He steals a truck containing a border collie named Lad, which he uses to incubate a new weasel as a biological weapon. His original target, a municipal water tower called the Derry Standpipe, was destroyed in 1985, and Jonesy had stolen the relevant memories from his mental storeroom, forcing Mr. Gray to target the Quabbin Reservoir in western Massachusetts, which supplies drinking water to millions in the Boston area. Inside his mental office, Jonesy observes Mr. Gray becoming increasingly human, prone to tantrums and cravings.

Owen and Henry race south, stopping in Derry to pick up Duddits, now gaunt and bald from chemotherapy for advanced leukemia. On the highway, Duddits guides them by pointing, seeing Mr. Gray's trail as a bright line. Kurtz pursues 20 miles behind with Freddy Johnson, a loyal soldier, and Archie Perlmutter, a former aide whose incubating weasel gives him a telepathic link to the dog Lad. Duddits and Jonesy collaborate telepathically to slow Mr. Gray by amplifying his craving for bacon, causing him to gorge on raw meat until he is violently ill. The delay closes the gap.

The three groups converge on the Quabbin. Mr. Gray abandons his stuck car and carries the pregnant dog through snowy woods to the shaft house over Shaft 12, the reservoir's intake point. He partially opens the iron cover, but the weasel begins to emerge from the dying dog. In a shared psychic space facilitated by the dying Duddits, Jonesy and Henry find Mr. Gray in a hospital bed and kill him: Henry smothers him with a pillow while Jonesy slashes his throat. In the physical world, control returns to Jonesy, who catches the weasel just before it drops into the shaft. Owen, galvanized by a final telepathic push from Duddits, shoots the creature dead.

Kurtz and Freddy arrive and fatally shoot Owen. Freddy then shoots Kurtz, realizing Kurtz intends to kill him next. The weasel that incubated inside the now-dead Perlmutter attacks and kills Freddy. Henry, who played dead beside Duddits's body in the other vehicle, destroys Kurtz's Humvee with gunfire, incinerating the final weasel. Duddits dies during these events, having expended the last of his strength to hold his friends together. The Quabbin's water supply remains uncontaminated.

In an epilogue set the following Labor Day, Henry and Jonesy reflect on their experiences at Jonesy's cottage. Henry lost two fingers to frostbite; Jonesy received another hip replacement. Henry argues that Mr. Gray was never a truly independent alien consciousness but a byrus-transmitted intention shaped by human imagination; the aliens themselves may have been nothing more than spores in ships built by some other, possibly extinct race. They acknowledge that Duddits changed them permanently, that their telepathic abilities are fading, and that alien contact will likely come again. They toast absent friends and walk toward a family barbecue, their shadows trailing behind them on the grass.