In the Scottish Highlands where secrets settle like mist in the glens, Detective Inspector James Corstorphine is summoned to a macabre scene–a gamekeeper hanging from an ancient oak, ensnared by an intricate trap of wire and bone. Still grieving his wife's death, Corstorphine finds himself hunting a killer who crafts elaborate deathtraps from human remains–clockwork mechanisms that deliver murder with chilling precision.

This state-of-the-art smart home has everything: a next-generation entertainment system, an ultramodern kitchen where every appliance is online and even a personal AI to control it all. Standing above its owner's lifeless body, FBI agent Jude Mackenzie is faced with the daunting task of discovering how the woman was killed by her own home. How do you catch a murderer that doesn't leave any fingerprints?

In the summer of 1990, young sisters Caroline and Joanna are sent to stay with their Great Aunt Dora in the idyllic Gloucestershire village of Witchwood. Still reeling from their father’s tragic death and their mother’s grief, Witchwood offers a welcome escape—but the shadowy woods hide dark secrets that bring their innocence to a distressing end. Caroline, volatile and longing for attention, becomes fixated on Dean Fry, the handsome local bad boy. When a body is found in the woods, the village becomes a cauldron of suspicion.

When Kate Fox receives a late-night phone call, her seemingly perfect life on the Nebraska prairie shatters in an instant. Eldon, shirt-tail relative and owner of one of the largest cattle ranches in Grand County, has been killed. Kate's husband, Ted, the Grand County sheriff, has been shot and may never walk again. And worst of all, Ted is the prime suspect in Eldon’s murder. Desperate to clear Ted's name, Kate throws herself headlong into the hunt for the real killer. When she finds herself the victim of several mysterious “accidents”, she knows she’s running out of time.

Pearl Gorham arrives in 1965, one of a string of young women sent to Lichen Hall to give birth. And she soon suspects the proprietors are hiding something. Then she meets the mysterious mother and young boy who live on the grounds—and together they begin to unpack the secrets of this place. As the truth comes to the surface and the darkness moves in, Pearl must rethink everything she knew—and risk what she holds most dear.