Grace arrives at Calvin Wells's ranch Airbnb outside Dubois, Wyoming, and meets her handsome host for the first time.

Grace discovers women's underwear in her bedroom dresser and a cracked, blood-smeared window in her room.

Grace wakes in the night to the sound of a woman screaming somewhere outside the ranch house.

Sheriff Almond visits the ranch and questions Calvin about Briana Becker, an Airbnb guest who went missing.

Grace's horse bolts and throws her during a riding lesson, leaving her with a mild concussion.

Calvin punches his brother Joe in the face after seeing Grace slap him at the Rustic Pine Tavern.

Calvin takes Grace to a candlelit pasture after his birthday party, where the two make love.

A mountain lion attacks Grace in the pasture and Calvin shoots it dead.

A drunken and confused Albert climbs into Grace's bed at night and she demands Calvin install a lock on her door.

Joe drenches curtains in accelerant and sets them alight; Grace calls 911 from the ranch landline.

Grace breaks into Calvin's basement and finds Briana Becker's signature as the final entry in a hidden guestbook.

Betty discovers Albert's body near the ranch beehives after he suffered a fatal allergic reaction.

Grace drugs Calvin's morning coffee; when her car won't start, Calvin grabs her by the hair and drags her.

A drugged Calvin admits he intentionally killed Lisa and that Briana Becker is alive and imprisoned in a nearby shed.

Grace stabs Calvin with his own knife, burns the ranch house, and frees the imprisoned Briana from the shed.

Grace Evans, posing as a New York banker, arrives at Calvin Wells's remote Wyoming ranch Airbnb and quickly notices unsettling signs—women's underwear in her room, a blood-smeared window, and a nighttime scream she can't explain. A missing guest investigation by Sheriff Almond deepens her suspicion, while a horse-riding accident, a tavern brawl, and a birthday party romance keep her emotionally entangled with Calvin. As Joe's arson attempt exposes cracks in the Wells family, Grace secretly breaks into Calvin's basement and finds proof that the missing Briana Becker was at the ranch. On her final day, Grace drugs Calvin's coffee, survives his attack, and interrogates him until he confesses to murdering his girlfriend Lisa and imprisoning Briana in a nearby shed. Grace kills Calvin with his own knife, frees Briana, burns the ranch house, and escapes—revealing herself to be far more dangerous than the man she just killed.

The headline events driving Grace and Calvin's deadly confrontation.

Grace stops at a Gunslinger 66 gas station in Dubois and the attendant approaches her car, making her uneasy.

Calvin privately notices that Grace carries a heavy, mysterious bag she refuses to open in front of him.

Grace visits Betty's Boutique to buy ranch clothes and realizes Betty already knows her name without being told.

A raccoon kills several of Calvin's ducks and chickens; Calvin shoots it and Grace helps tend to the surviving birds.

Charlotte Miller arrives at the Wind River and interrupts Calvin and Grace's fishing lesson.

Calvin loses the fishing wager and jumps into the Wind River naked, then challenges Grace to do the same.

Calvin surprises Grace by paying her medical bill at Dr. Reed's despite previously claiming the ranch was struggling financially.

Grace dreams of Calvin's taxidermized animal heads coming alive and attacking her.

Charlotte arrives at the ranch and tells Grace that she and Calvin once had a romantic fling.

Calvin's birthday party brings together Betty, Wyatt, Joe, Charlotte, Dr. Reed, and Patty at the ranch.

Calvin reveals to Grace that his parents died in a fire and that Joe's drunk driving killed his girlfriend Lisa.

Calvin visits Betty's Boutique and Betty warns him he must let Grace leave within three days.

Wyatt arrives at the ranch and punches Calvin after discovering that Charlotte suffered a serious head wound.

A drunken Joe reveals to Calvin that their mother shot their father and then turned the gun on herself.

The gas station attendant produces Grace's forgotten driver's license and addresses her as Avery Adams.

Before Grace even reaches the ranch, her stop at a rural gas station unsettles her, and her arrival at Calvin's home—with its taxidermized walls and missing internet—compounds her unease. Daily life at the ranch surfaces telling details: Calvin's overprotective circle, his financial secrets, and his carefully crafted image as a humble country host. The tavern night, the birthday party, and Charlotte's jealous interference introduce a web of local relationships that each carry hidden knowledge about Calvin's true nature. A drunken Joe eventually detonates the family's darkest secret, revealing that the Wells brothers' parents died in a murder-suicide, while Betty quietly maneuvers behind the scenes to protect Calvin. By the time the gas station attendant produces Grace's forgotten driver's license and calls her by her real name, the full scope of what both killers have concealed begins to surface.

The secondary moments that deepen the mystery and atmosphere of the ranch.

Grace discovers she has no cell service at the ranch and Calvin confirms the wi-fi is also unavailable.

Grace questions Calvin about the screaming woman she heard in the night and he dismisses it as a fox.

Calvin privately thinks of Grace as his true catch of the day after she reels in a large walleye.

Grace falls into a pit filled with rotting animal carcasses during her morning jog along the ranch road.

Joe reveals to Grace that Calvin's girlfriend Lisa died on Calvin's birthday exactly one year ago.

Calvin tells Charlotte that one night was enough and firmly ends her romantic pursuit of him.

Grace discovers that Calvin bought an entire library of classic books specifically to impress her before her arrival.

Sheriff Almond pulls Grace aside after Joe's arson confession and privately recommends she leave the ranch immediately.

Betty appears outside the ranch in her nightgown and warns Grace that she should not have come and may not be able to leave.

Grace realizes her bedroom lock was installed backward, positioned so Calvin could lock her inside from the outside.

Grace confronts Calvin with a photograph from his basement proving that Albert is actually his and Joe's uncle.

Grace logs into Calvin's computer and posts a glowing Airbnb review under her own account before killing him.

After killing Calvin, Grace dyes her hair brown and removes her blue contact lenses, revealing her true appearance.

Avery sets the Gunslinger 66 gas station on fire as she drives away, eliminating the last witness to her real identity.

Avery returns to her Chicago family and her daughter Margo asks to join her on a future retreat.

From the moment Grace realizes she has no cell service and no working wi-fi, the power dynamics of the ranch begin to shift in quiet but decisive ways. Small revelations accumulate—Calvin's private obsession with Grace, his manufactured backstory about books and loneliness, and the neighbor warnings that imply others know his secrets—while Grace methodically positions herself for the kill. Betty's midnight warning and the discovery of the backward lock confirm Calvin's predatory intent, but Grace is already several steps ahead. Her final moves are precise: she uses Calvin's own computer to erase her digital footprint, she sheds her disguise, and she burns the gas station that holds the one witness to her real identity. Returning home to her family in Chicago, Avery Adams reflects on the hunt and eyes her daughter as a possible future accomplice, closing the novel on a chilling note of continuation.