With one unexpected email from her estranged best friend, Lucy, Mina Murray’s carefully curated life is turned upside down. Leaving behind her psychiatric practice in London, along with her routine and the calm it brings, she returns to the windswept shores of Wales. Faced with everything she’s left behind, she soon discovers that Lucy’s symptoms mirror those of her mysterious patient with amnesia hundreds of miles away.

Clem gets a call that is every mother’s worst nightmare. Her nineteen-year-old daughter Erin is unconscious in the hospital after a hiking trip with her friends on the remote Orkney Islands that met a horrifying end, leaving her boyfriend dead and her best friend missing. When Erin wakes, she doesn’t recognize her mother. And she doesn’t answer to her name, but insists she is someone named Nyx.

Years ago, Alex Marks escaped to New York City for a fresh start. Now, aside from trips to her regular diner for coffee, she keeps to herself, gets her perfectly normal copywriting job done, and doesn’t date. Her quiet world is upended when her childhood hero, Francis Keen, is brutally murdered. Francis was the woman behind the famous advice column, Dear Constance, and her words helped Alex through some of her darkest times. When Alex sees an advertisement searching for her replacement, she impulsively applies, never expecting to get the job.

1692. On the outskirts of Salem, a bookstore stands covered in overgrown vines. Inside, a young woman hides a linen-wrapped journal under a loose floorboard and runs away, panicked by the sound of hounds barking in the distance. The bookstore vanishes into thin air…

Thirteen-year-old Ben is sent to a remote reform program for troubled teens by a juvenile court judge. But when he arrives at the camp, located on the edge of the vast wilderness of northwestern Montana, he immediately recognizes that there is something off about the counselors. They’re too friendly and upbeat…yet Ben can tell there’s an undercurrent of menace. As he gets to know the boys in his cabin, he soon discovers that they each have far more going for them than whatever crime landed them there.