The vacation house is a luxurious getaway for a wealthy English family, windows open to sun and the sea, a sparkling swimming pool, and a verdant garden. One hot summer night, while the parents and their friends drink wine and amuse themselves, a young woman—the teenage daughter of the Greek caretaker—ventures for a walk on their private beach. Her life will never be the same again.

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.

The worst thing to ever happen on Hemlock Circle occurred in Ethan Marsh’s backyard. One July night, ten-year-old Ethan and his best friend and neighbor, Billy, fell asleep in a tent set up on a manicured lawn in a quiet, quaint New Jersey cul-de-sac. In the morning, Ethan woke up alone. During the night, someone had sliced the tent open with a knife and taken Billy. He was never seen again. Thirty years later, Ethan has reluctantly returned to his childhood home. Plagued by bad dreams and insomnia, he begins to notice strange things happening in the middle of the night.

A great writer knows when to deliver a juicy plot twist. But for one author, the biggest twist of all is her own murder. With twenty hit titles, and a highly anticipated movie tie-in, celebrated novelist Columbia Jones is at the top of her game. Fans around the world adore her. But on the final night of her latest book tour, one face in the crowd makes the author collapse. And by the next morning, she’s lying dead in a pool of blood.

Dan Garvie’s life has been haunted by the crime he witnessed as a child—narrowly escaping an encounter with a notorious serial killer. He has dedicated his life since to becoming a criminal profiler, eager to seek justice for innocent victims. So when his father passes away under suspicious circumstances, Dan revisits his small island community, determined to uncover the truth about his death. Is it possible that the monster he remembers from his childhood nightmares has returned after all these years?