Emily, a popular but bookish prep school senior, goes missing after a night out with friends. She was last seen leaving a party with Alex, a football player with a dubious reputation. But no one is talking. Now three mothers, Catherine, Leslie and Morgan, friends turned frenemies, have their lives turned upside down as they are forced to look to their own children—and each other’s—for answers to questions they don’t want to ask.

The three Williams girls are as close as sisters can be, and they also share one special trait in common: each of them have a man in their lives that they could do without.

From Alex Finlay, the author of Every Last Fear and The Night Shift, comes an action-packed new thriller What Have We Done, about the lives we leave behind and the secrets we carry with us forever.

Neighbors Gwen, Aimee, and Lisa share more than playdates and coffee mornings on their tranquil street in East Bethesda. They confide their deepest secrets, navigate the challenges of motherhood together, and provide a support system that seems unbreakable. But when Gwen's husband is found murdered after one of their weekly Friday night dinners, the peaceful quiet of their cul-de-sac shatters. The seemingly idyllic world of the three close-knit mom friends becomes a web of deception, betrayal, and revenge.

When Dr. Sloan Hastings submits her DNA to an online genealogy site for a research assignment, her goal is to better understand the treasure-trove of genetic information contained on ancestry websites. Brilliant and driven, Sloan is embarking on a fellowship in forensic pathology, training under the renowned Dr. Livia Cutty. Sloan has one reservation about involving herself in the experiment: she’s adopted. Grateful for a loving home, she’s never considered tracking down her biological parents.

Stephanie and Jessica have nothing and everything in common. The two women don’t know each other but are on the same plane heading to California. Stephanie is on a business trip and Jasmine is fleeing an abusive relationship. After a few days, they text their friends the same exact messages about the same man—the messages becoming stranger and more erratic. And then the two women vanish. The texts go silent, the red flags go up, and the panic sets in. When Stephanie and Jasmine are each declared missing and in danger, it begs the questions: Who is Trent McCarthy?

Charismatic daredevil and extreme adventurer Maverick Dillan invites you to the ultimate game of hide-and-seek. But as the players gather on Falcao Island, the event quickly spirals into a chilling test of survival. A storm rages as a deadly threat stalks the contestants, turning the challenge into something far more sinister than the social media stunt it was intended to be.

Anne is barely keeping it together. A frazzled ghostwriter and aspiring novelist, she juggles nine-year-old twins and a listless marriage from an overcrowded Manhattan apartment, spreading herself thinner each day. Just as Anne is about to give up on her dreams, she lands her biggest client yet: Melody Wells. Melody paints a picture of serenity and empowerment in the lavender haze of her visualization workshops—however, the one thing she can’t manifest are the pages her publisher is demanding for her new motivational book. Enter Anne.

Liz Dawson weaves through a crowd with the ease of a tropical breeze; she’s clever, smooth, and confident—qualities that make her a brilliant serial con artist. Isabelle Beresford is strikingly beautiful, obscenely wealthy, and the new owner of Casa Esmerelda, a fabulous villa on the Mexican coast—attributes that make her the perfect mark. When she offers Liz a job handling the installation of a piece of art in her otherwise vacant home, Liz can’t resist the allure of a beach retreat. But when Liz is mistaken for Isabelle herself, Liz can’t help slipping into the socialite’s identity.

Rosie Lachlan wants nothing more than to find The One. A year after she was dumped in her wedding dress, she’s working at her parents’ bridal salon, anxious for a happy ending that can’t come soon enough. After receiving a life-saving heart transplant, Rosie knows her health is precious and precarious. She suspects her heart donor is Daphne Thorne, the wife of local celebrity author Morgan Thorne, who she begins messaging via an anonymous service called DonorConnect, ostensibly to learn more about Daphne. But Rosie has a secret.

Meg Russo was behind the wheel when it happened. She and her husband Justin were driving their daughter Lily to Ithaca College, the family celebrating the eighteen-year-old music prodigy’s future. Then a car swerved up beside them, the young men inside it behaving bizarrely—and Meg lost control of her own vehicle. The family road trip turned into a tragedy. Justin didn’t survive the accident.

Brooklyn psychiatrist Dr. Caroline Strange is certain she knows what's best for her patients, her family, and pretty much everyone else, but that all changes when a troubled young man arrives for his appointment and makes a pair of alarming confessions: I am going to kill someone, and I know who you really are. Dr. Caroline is accustomed to hearing her patients’ deepest, darkest secrets, but it seems Nelson Schack may be one step ahead when detectives show up later that day, inquiring about a missing woman.

For the past five years, Ryan Richardson has relived that terrible night. The car door ripping open. The crushing blow to the head. The hands yanking him from the vehicle. His girlfriend Ali’s piercing scream as she is taken. With no trace of Ali or the car, a cloud of suspicion hangs over Ryan. But with no proof and a good lawyer, he’s never charged, though that doesn’t matter to the podcasters and internet trolls. Now, Ryan has changed his last name, and entered law school. He's put his past behind him. Until, on a summer trip abroad to Italy, Ryan gets a call from his father.

On a brisk fall night in a New York apartment, 35-year-old Billie West hears terrified screams. It's her lifelong best friend Cassie Barnwell, one floor above, and she's just realized her infant daughter has gone missing. Billie is shaken as she looks down into her own arms to see the baby, remembering—with a jolt of fear—that she is responsible for the kidnapping that has instantly shattered Cassie’s world.

It’s been eleven years since high-powered attorney Sarah Morgan defended her husband, Adam, against the charge of murdering his mistress. Sarah has long since moved on, starting a family with her new husband, Bob Miller, and changing careers. Her life is back to being exactly how she always wanted … or is it?