As a young child, Hanna tried to murder her own mother. But that was more than 16 years ago. Extensive therapy --- and writing letters to her younger brother --- has since curbed those nasty tendencies. Now 24, Hanna is living an outwardly normal life of domestic content. Married to real estate agent Jacob, she’s also stepmother to his teenage daughter, Joelle. They live in a beautiful home, and Hanna loves her career as a phlebotomist --- a job perfectly suited to her occasional need to hurt people. But when Joelle begins to change in ways that don’t suit Hanna’s purposes, her carefully planned existence threatens to come apart. With life slipping out of her control, Hanna reverts to old habits, determined to manipulate the events and people around her. And the only thing worse than a baby sociopath is a fully grown one.

Grace isn’t exactly thrilled when her newly widowed mother, Jackie, asks to move in with her. They’ve never had a great relationship, and Grace likes her space --- especially now that she’s stuck at home during a pandemic. Then again, she needs help with the mortgage after losing her job. But living with Mother isn’t for everyone. Good intentions turn bad soon after Jackie moves in. Old wounds fester, and new ones open. Grace starts having nightmares about her disabled twin sister, who died when they were kids. And Jackie discovers that Grace secretly catfishes people online. When Jackie makes an earth-shattering accusation against her, Grace sees it as an act of revenge, and it sends her spiraling into a sleep-deprived madness.

Imogen and Beck, two sisters who couldn't be more different, have been friends with Tilda since high school. Once inseparable, over two decades the women have grown apart. But after Imogen survives a traumatic attack, Beck suggests they all reunite to hike deep into the Grand Canyon’s backcountry. A week away, secluded in nature…surely it’s just what they need. But as the terrain grows tougher, tensions from their shared past bubble up. And when supplies begin to disappear, it becomes clear that secrets aren’t the only thing they’re being stalked by.

After years of city life, Orla and Shaw Bennett are ready for the quiet of New York's Adirondack mountains --- or at least, they think they are. Settling into the perfect farmhouse with their two children, they are both charmed and unsettled by the expanse of their land, the privacy of their individual bedrooms, and the isolation of life a mile from any neighbor. But none of the Bennetts could expect what lies waiting in the woods, where secrets run dark and deep. When something begins to call to the family --- from under the earth, beneath the trees and within their minds --- Orla realizes she might be the only one who can save them…if she can find out what this force wants before it's too late.

Seven-year-old Hanna is a sweet-but-silent angel in the eyes of her adoring father Alex. He’s the only person who understands her. But her mother Suzette stands in her way, and she’ll try any trick she can think of to get rid of her. Ideally for good. Suzette loves her daughter, but after years of expulsions and strained home schooling, her precarious health and sanity are weakening day by day. She’s also becoming increasingly frightened by Hanna’s little games, while her husband Alex remains blind to the failing family dynamics. Soon, Suzette starts to fear that maybe their supposedly innocent baby girl may have a truly sinister agenda.