Ever since she was a teenager, Tessa Nilsson has been consumed by the story of four friends who disappeared. As her true crime fervor turned into a wildly popular podcast, Tessa covered Sweden’s most gruesome cases, but could never find the answers behind what happened to these women who disappeared. Now Tessa’s podcast has crashed and burned, any chance she had at uncovering the truth vanishing with it.

Bryden and Sam have it all: thriving careers, a smart apartment in a luxury condominium, supportive friends and a cherished daughter. The perfect life for the perfect couple. Then Sam receives a call at his office. Bryden–working from home that day–has failed to collect their daughter from daycare. Arriving home with their little girl, he finds his wife’s car in the underground garage. Upstairs in their apartment her laptop is open on the table, her cell phone nearby, her keys in their usual place in the hall. Except Bryden is nowhere to be seen. It’s as if she just walked out.

Thom and Wendy Graves have been married for over twenty-five years. They live in a beautiful Victorian on the north shore of Massachusetts. Wendy is a published poet and Thom teaches English literature at a nearby university. Their son, Jason, is all grown up. All is well…except that Wendy wants to murder her husband.

In this “outstanding debut thriller” (Booklist, starred review), Helen’s idyllic life—handsome architect husband, gorgeous Victorian house, and cherished baby on the way—begins to change the day she attends her first prenatal class. There, she meets Rachel, an unpredictable single mother-to-be who doesn’t seem very maternal: she smokes, drinks, and professes little interest in parenthood.

From the instant New York Times bestselling author of The Writing Retreat, a white-knuckled locked-room thriller about a social worker who, after coming face-to-face with her dark past, must infiltrate a mysterious wellness center in the deserts of New Mexico.