Thorne Manor has always been haunted...and it has always haunted Bronwyn Dale. As a young girl, Bronwyn could pass through a time slip in her great-aunt's house, where she visited William Thorne, a boy her own age, born two centuries earlier. After a family tragedy, the house was shuttered and Bronwyn was convinced that William existed only in her imagination. Now, 20 years later Bronwyn inherits Thorne Manor. And when she returns, William is waiting.

Strange things are happening in Maya's tiny Vancouver Island town. First, her friend Serena, the captain of the swim team, drowns mysteriously in the middle of a calm lake. Then, one year later, mountain lions are spotted rather frequently around Maya's home and her reactions to them are somewhat . . . unexpected. Her best friend, Daniel, has also been experiencing unexplainable premonitions about certain people and situations.

May 20, 2019: Homicide detective Mallory is in Edinburgh to be with her dying grandmother. While out on a jog one evening, Mallory hears a woman in distress. She’s drawn to an alley, where she is attacked and loses consciousness. May 20, 1869: Housemaid Catriona Thomson had been enjoying a half-day off, only to be discovered that night in a lane, where she’d been strangled and left for dead. When Mallory wakes up in Catriona's body in 1869, she must put aside her shock and adjust quickly to the reality.

Laney Kilpatrick has been renting her vacation home to strangers. The invasion of privacy gives her panic attacks, but it’s the only way she can keep her beloved Hemlock Island, the only thing she owns after a pandemic-fueled divorce. But broken belongings and campfires that nearly burn down the house have escalated to bloody bones, hex circles, and now, terrified renters who've fled after finding blood and nail marks all over the guest room closet, as though someone tried to claw their way out...and failed.

A stranger is trespassing in Celeste Turner's backyard, moving through the shadows around her shed. It could be a harmless backpacker seeking temporary refuge, but experience has taught Celeste to be extra wary. Not wishing to draw unwanted attention, she cannot turn to the police. Celeste is an outsider to this region of rural Florida, and all the locals see is a "city girl" who swooped in to secure her inheritance. But Celeste needs her new life to work, so she must confront her intruder. To her surprise, she finds out that her unwanted guest is a young backpacker named Daisy.