#1 New York Times Bestseller For readers of Gillian Flynn and Tana French comes one of the decade’s most anticipated debuts, published in forty-one languages around the world and to be released a major film from Fox in October 2019: a twisty, powerful Hitchcockian thriller about an agoraphobic woman who believes she witnessed a crime in a neighboring house.“ Astounding. Thrilling. Lovely and amazing…. Finn has created a noir for the new millennium, packed with mesmerizing characters, stunning twists, beautiful writing and a narrator with whom I’d love to split a bottle of pinot. Maybe two bottles—I’ve got a lot of questions for her.”— Gillian Flynn, #1 New York Times bestselling author Soon to be a major motion picture starring Amy Adams, Julianne Moore, and Gary OldmanAnna Fox lives alone—a recluse in her New York City home, unable to venture outside. She spends her days drinking wine (maybe too much), watching old movies, recalling happier times . . . and spying on her neighbors.Then the Russells move into the house across the way: a father, a mother, their teenage son. The perfect family. But when Anna, gazing out her window one night, sees something she shouldn’t, her world begins to crumble—and its shocking secrets are laid bare.What is real? What is imagined? Who is in danger? Who is in control? No one – and nothing – is what it seems in this riveting thriller that gripped the world.