Perry Holt dies of a heart attack, and his stepdaughter Hazel returns to Mirror Lake for the memorial service.

A car submerged in Mirror Lake is discovered during the drought, diverting the entire police force away from Perry's funeral.

Hazel learns that Perry's will leaves his entire house exclusively to her, cutting her brothers out completely.

Skyler spots a second submerged vehicle at the bottom of the lake near the Holt family dock while swimming with goggles.

The second car is pulled from Mirror Lake, revealing two blue suitcases in the trunk that Hazel recognizes as her mother's.

The blue suitcases are opened and found completely empty, raising urgent new questions about how Libby disappeared.

Jamie vanishes without explanation, and Caden dismisses Hazel's concerns, insisting his wife will return on her own.

Hazel finds an old photo showing Gage and Caden posing beside Audrey Holt's car — the first car raised from the lake.

Hazel finds Sonny Varino dead at her cottage, apparently from a fentanyl overdose.

Hazel finds a complete version of her mother's goodbye letter hidden in Skyler's bedroom, revealing Libby planned to return that night.

Comparing both letters, Hazel realizes her childhood note was only a traced copy, proving Libby never intended to abandon her.

Roy corners Hazel at gunpoint and confesses to murdering Libby, framing her for embezzlement, and killing Nico's father.

Caden arrives during Roy's armed confrontation and is shot in the leg while buying Hazel time to escape.

Hazel dives into Mirror Lake to evade Roy, who pursues her and drowns in the powerful cross currents.

Libby's remains are found buried under Roy's gazebo, and the family scatters her ashes over Mirror Lake.

Perry Holt's death brings his stepdaughter Hazel back to Mirror Lake, where a prolonged drought has begun exposing long-buried secrets at the bottom of the lake. The second car pulled from the water belongs to Hazel's missing mother Libby, and its completely empty luggage destroys every assumption the town had made about her disappearance. As Jamie vanishes and Sonny dies, Hazel uncovers a complete version of Libby's farewell letter proving her mother never chose to abandon her. The trail of hidden evidence leads Hazel into a deadly confrontation with Uncle Roy, who reveals himself as the man who murdered Libby and framed her for his own crimes. Caden is shot protecting Hazel, and Roy drowns pursuing her into the lake. The family finally lays Libby to rest and agrees to share Perry's legacy equally.

The headline events driving the central mystery of Libby's disappearance.

Hazel encounters her former high school boyfriend Nico Pritchard in the parking lot immediately after Perry's memorial.

Uncle Roy phones Hazel to say Perry's will contains a provision that requires a personal meeting to discuss.

Hazel spends a night alone in Perry's house and discovers an unfamiliar gun in a case on the dining room table.

Uncle Roy warns Hazel at the lakeside that Caden plans to contest the will but is unlikely to succeed in court.

Officer Serena Flores takes charge of investigating the second submerged car and formally questions Hazel about Libby's disappearance.

Hazel tells investigators about Joe Lyons, a man her mother once feared and lived with before arriving in Mirror Lake.

Two true crime YouTubers called the Water Hunters are caught filming Hazel's property from a boat on the lake.

Hazel accesses Perry's computer and discovers his savings and checking accounts have been drained by consistent monthly withdrawals.

Hazel finds a voicemail from Jamie on Perry's landline requesting a meeting at The Barrel, then finds an abandoned instant camera there.

Hazel shows Roy an old photo of Audrey's car at his law office, but he claims not to recall any relevant details.

Pete takes Hazel out on his fishing boat and reveals Perry accidentally struck Audrey with his car and staged a cover-up.

High school student Levi admits to stealing items from Hazel's house and reveals the group also took a hidden gun.

Hazel smashes the plaster behind Perry's mismatched office mirrors and discovers his hidden life savings concealed in the walls.

Photos from the developed instant camera reveal a teen intruder photographing sleeping residents, including a visibly terrified Jamie.

Max Falkner's body is found below The Barrel, and Hazel locates the missing Jamie hiding at the Mirror Lake Motel.

While the main mystery unfolds, Hazel pieces together the truth through a series of crucial secondary encounters and finds. She discovers Perry's accounts have been mysteriously drained and learns from retired detective Pete that Perry covered up his first wife Audrey's death in a car accident, with his young sons forced into silence as witnesses. Hazel's investigation is complicated by true crime YouTubers filming her property and a gang of teen burglars whose prank thefts accidentally surface critical evidence. A roll of film from an abandoned instant camera reveals that missing teenager Max Falkner was photographing sleeping residents — including a terrified Jamie — before his fatal fall at The Barrel. Locating Jamie at the motel and discovering Perry's hidden savings behind office mirrors allow Hazel to understand exactly how Roy kept his crimes concealed for so long.

The clues, encounters, and discoveries that filled in the full picture.

Skyler sneaks into Perry's house through a garage window, and Caden blames Hazel when the girl briefly disappears at the lake.

Sonny Varino warns Hazel that wives connected to Holt men always seem to end up unable to leave Mirror Lake.

Motion detector lights activate at midnight, leading Hazel to find Nico watching the property; the two spend the night together.

Hazel discovers every smoke alarm in Perry's house has had its batteries removed and discarded in the outdoor trash bin.

Keira calls about renovation photos and reveals that someone was visibly moving inside the house while Hazel photographed the exterior.

Hazel breaks into the crawlspace beneath Perry's house and discovers a hidden internal stairway and a box of Audrey's jewelry.

Serena tells Hazel the photo of Audrey's car doesn't match the first car recovered and warns her to stop investigating.

At the family dinner, Roy presents a legal document proposing that Hazel divide Perry's house equally among the three siblings.

Water Hunters footage captures a man in dark clothing slipping through Hazel's back door while she argued with them outside.

Hazel finds Nico's walls covered in his father's crime scene photos suggesting Audrey was struck by a car, not a bicycle.

Nico confesses he discovered Libby's car at the bottom of the lake years ago but stayed silent to protect his father's reputation.

Pete reveals the blank Mexican postcard Hazel received in college was sent from his vacation home, frequently used by local police.

Gage confesses he found Libby's original letter years ago, traced a misleading partial copy for Hazel, and mailed the postcard himself.

Roy reveals at gunpoint that he murdered Nico's father Nicholas when Nicholas got too close to the truth about Audrey's death.

Caden confesses he was the one who told Libby about Audrey's death and spent years blaming himself for her disappearance.

Beneath the surface of Hazel's investigation lies a series of revelations that gradually expose how deeply the town has conspired to conceal the truth. Sonny's early warning about Holt men and disappearing wives proves prophetic, and Hazel slowly realizes the house Perry left her is deliberately full of buried clues. Nico's hidden room of crime scene photos reframes Audrey's death as no accident, and his confession that he concealed Libby's submerged car for years shatters Hazel's trust in the people closest to her. Pete's disclosure about the Mexican postcard leads directly to Gage's devastating confession that he forged Hazel's childhood goodbye letter and manufactured a false sense of closure for over a decade. Roy's admission at gunpoint that he killed Nico's father to protect his blackmail scheme reveals the full reach of his manipulation, and Caden's confession that he inadvertently set Libby's murder in motion finally frees him from a lifetime of guilt.