Liam is pushed off the cliff at his California cottage, and his death is ruled an accidental fall.

Sam reveals to Nora that Liam changed his will last minute, leaving her his cottage and his sons the company.

Sam and Nora meet Detective O'Brien at Windbreak and learn a mysterious jogger fled the scene before police arrived.

Sam and Nora visit Joe, who is evasive about Liam's secret plan to sell Noone Properties to Cece Salinger.

Sam and Nora ambush Cece at a restaurant; she admits Liam called her twice the night he died.

Sam and Nora discover that Liam's phone is still pinging a cell tower and his work laptop has gone missing.

Sam and Nora visit Paul Turner, Grace's widower, who is evasive and reveals that Tommy also questioned him.

Tommy shows Sam and Nora a Forbes article about Cece's mysterious old friend, complicating their theory about their father.

Jack tells Nora he is leaving to help open a restaurant in California and asks her to figure out what she wants.

Sam tells Nora he no longer suspects foul play and plans to speed up his wedding to Morgan.

Property manager Clark tells Nora that the only woman besides Liam's wives who ever visited Windbreak was named Cory.

Nora searches Liam's high school literary magazine and realizes the editor, Cordelia, is Grace, his longtime business partner.

Sam and Nora confront Joe, and he reveals the full truth of Liam and Grace's secret lifelong relationship.

Sam and Nora confront Paul Turner, who admits he accidentally shoved Liam during a heated argument about Grace.

Sam leaves Noone Properties to pursue a new career, and Nora goes to Jack's restaurant to ask for a second chance.

Liam Noone dies under suspicious circumstances at his California cliff-side cottage, but police rule the fall accidental. His daughter Nora and son Sam begin their own investigation, uncovering that Liam had secretly planned to sell his company and that his missing phone and laptop point to a cover-up. Their search leads them through evasive witnesses, a cryptic property manager, and a buried name — Cory — that unlocks the truth about their father's lifelong secret love. When Nora identifies Cory as Grace, Liam's longtime business partner, the siblings finally understand the private emotional world their father had hidden from them for decades. Joe confirms the full story of Liam and Grace's relationship, and the trail leads back to Paul Turner, Grace's widower, who admits to accidentally shoving Liam during a confrontation over their affair. With the mystery solved, Sam and Nora choose forgiveness over retribution and commit to breaking the cycle of emotional distance their father left behind.

The core mystery behind Liam's death and its resolution.

Nora realizes Sam hired her to renovate his brownstone mostly as a pretext to discuss their father's death.

Nora reads Liam's will and reflects on how he compartmentalized his relationships with his ex-wives and children.

Nora tells Jack about Sam's suspicions at his restaurant, and Jack offers to travel with her to California to investigate.

Flashback: Joe moves in with Liam's family, and both boys become smitten with a new transfer student named Cory.

Clark, the property manager, hints at wanting to share something with Nora at Windbreak but is interrupted by Sam.

Flashback: Cory insists on breaking up with Liam as he leaves for Yale, refusing to be the thing that holds him back.

Flashback: Liam proposes to Cory just before she leaves for California for graduate school, and she declines.

Witness Meredith Cooper calls Nora and describes the mysterious man seen near Windbreak who left before police arrived.

Nora recalls Liam's last visit to her home, where they talked about her biophilic memory care facility project.

Flashback: Cory's mother falls ill, forcing her to abandon her PhD; Liam offers to cancel his wedding to Rachel, and she declines.

Sam takes Nora to meet his former girlfriend Taylor, who warns Nora to be careful with Sam.

Sam confesses Taylor recently got married and that his own career obsession ultimately cost him the relationship.

A forensic pathologist tells Nora that Liam's fall appears suspicious and she would not rule out homicide.

Nora visits Liam's childhood home in Brooklyn and discovers the words Cory and Liam carved inside a closet.

Nora visits Liam's apartment and runs into Inez, his third ex-wife, who is evasive about his romantic life.

Nora and Sam begin cautiously reconnecting after years of estrangement, first through a client meeting Sam arranged as a pretext and then through their shared grief over Liam. Along the way, flashbacks reveal how Liam and Cory fell in love as teenagers, how she repeatedly refused to fully commit to him, and how her mother's illness forced her to abandon her dreams and reshape her life. Back in the present, witness accounts, missing evidence, and guarded conversations with people like Clark and Paul's ex-girlfriend Taylor add texture to the mystery while also exposing the emotional wreckage that Liam's compartmentalizing left behind. Sam's broken relationship with Taylor and his unexamined grief mirror the patterns he inherited from his father, and Nora must ultimately press forward alone when Sam retreats. The investigation uncovers not just a killer but the full scope of how thoroughly Liam's secrecy estranged him from his children.

The supporting characters and subplots that shaped the investigation.

Sam corners Nora and asks her to fly to California with him to investigate whether Liam was murdered.

Flashback: Liam returns to Brooklyn for the holidays, and Cory refuses his party invitation but agrees to go elsewhere with him.

Sam and Nora agree that their father would not have taken his own life and rule out suicide as a possibility.

Sam and Nora spend the night at The Ranch and agree that everyone around Liam is hiding something from them.

Sam leaves an angry voicemail for Tommy after learning that Tommy had already secretly visited Paul Turner.

Elliot reveals to Nora that he had dinner with Liam just weeks before his death but provides little useful information.

Jack notices Elliot calling Nora repeatedly and is visibly hurt but quietly says nothing about it.

Flashback: Cory tells Liam she intends to get married and insists that their relationship must take a new shape.

Flashback: Liam shows Windbreak to Cory and tells her he wants to grow old there with her someday.

Nora takes a last-minute solo flight to California after Sam abruptly backs away from the investigation.

Nora finds an old photograph of young Liam, Joe, and Cece together and wonders what she is still missing from their story.

Flashback: Cory and Liam argue when she discovers he secretly planned to sell Noone Properties to Cece.

Nora realizes Elliot was Grace's cardiologist and deduces that Liam had intended to leave Noone Properties to Grace.

Flashback: Liam tells Grace he plans to leave her Noone Properties, insisting they built the company together.

Flashback: Grace finally agrees to move in with Liam after decades of declining his proposals and marriage offers.

The investigation into Liam's death is driven as much by emotional turning points as by clues, and the flashbacks woven through the narrative reveal the private world of longing and compromise that shaped Liam's life. After Sam convinces Nora to join the investigation, the two must confront not only their father's secrets but also the dysfunction in their own romantic lives, exposed most sharply when Nora's contact with her ex-boyfriend Elliot quietly pushes Jack toward the door. Flashbacks trace the stages of Liam and Cory's impossible relationship — the reunions, the refusals, the argument over the Cece sale, and the moment Cory finally agreed to move in with Liam just before her death. Back in the present, Nora presses forward alone after Sam retreats, flying to California and uncovering the connection between Elliot, Grace, and her father that finally makes sense of everything. The emotional arc ends with Liam's secret plan to leave Grace the company confirmed and, in the very last flashback, Grace's long-withheld agreement to finally share a life with him.

The key decisions, discoveries, and emotional turning points that defined the Noone family.