The Sanatorium (Reese’s Book Club) by Sarah Pearse

A REESE’S BOOK CLUB PICK and instant New York Times bestseller that will keep you turning pages long past bedtime. Sarah Pearse’s atmospheric debut is the kind of thriller that makes you grateful for a cozy reading nook—and nervous about every creaking floorboard.

Detective Elin Warner arrives at Le Sommet, a former sanatorium turned luxury hotel in the Swiss Alps, hoping for a peaceful family gathering. Instead, she finds herself trapped by a storm in a building that seems to remember its dark past. When her brother’s fiancée vanishes without a trace, Elin must slip back into detective mode—even as the hotel’s isolated location and eerie architecture work against her.

What makes The Sanatorium so deliciously unsettling is Pearse’s masterful use of setting. The converted sanatorium isn’t just a backdrop—it’s practically a character itself, with its minimalist design doing little to mask the troubled history lurking in every corridor. As the storm intensifies and more guests disappear, the tension becomes almost unbearable.

“An eerie, atmospheric novel that had me completely on the edge of my seat,” raved Reese Witherspoon, and Richard Osman called it “spine-tingling” with “twists you’ll never see coming.”

Perfect for fans of Ruth Ware and Lucy Foley, this is the thriller to reach for when the fog rolls in off Perkins Cove and you’re craving a story that chills as much as it thrills. Fair warning: you might want to keep the lights on.

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