“Does for bathtubs what Psycho did for showers. A thriller honed to a fine point, sharp and keen and piercing; it's darkly comic, too, and uncommonly observant.”—A. J. Finn, #1 New York Times bestselling author of The Woman in the Window

“A gripping story, beautifully told. Andrea Mara is masterful.”—Patricia Cornwell, #1 New York Times bestselling author of Postmortem

“A tense, terrifying, guessing game. Someone in the Attic twists, thrills and chills. I loved it.”—Chris Whitaker, New York Times bestselling author of We Begin at the End

“Someone is getting inside your house. . . It’s a chilling premise, and Andrea Mara executes it brilliantly. This one is an absolute page turner!”—Shari Lapena, New York Times bestselling author of The Couple Next Door

“As if attics weren’t creepy enough already, this book will leave you scared of the slightest overhead squeak. Someone in the Attic augments its horrifying premise with shocking twists, complicated friendships and dark secrets. Highly recommended!”—Ana Reyes, New York Times bestselling author of The House in the Pines

“The tension in Someone in the Attic is meticulously crafted, with a cover-your-eyes creep factor. If you’re a domestic thriller fan who hasn’t yet read Andrea Mara, you might have just found a new favorite.”—Ashley Audrain, New York Times bestselling author of The Push