Two neighboring couples are caught in a dangerous tangle of betrayal and deception in this "taut, twisty psychological thriller. Totally riveting" (James Hayman, New York Times bestselling author of The Girl on the Bridge). When Leah and her husband, Clay, move from Seattle to Maine, she envisions a vibrant new neighborhood packed with families-playmates for the twins and new couple friends to bond with. But while Clay works long hours to establish his brewery, Leah is left alone each day in a nearly deserted housing development where the only other occupants prefer to keep to themselves. Bored and adrift, Leah finds herself watching Clarissa and Russell Gaines next door, envying their stylishly decorated home and their university careers. But Leah's obsession with the intriguing, elegant Clarissa grows until she's not just spying from afar but sneaking into their house, taking small objects…and reading Clarissa's diary. It contains clues to a hidden turmoil Leah never guessed at-and a connection to a local college girl who's disappeared. "Scary and disturbing with dark psychological twists and turns, it horrifies while it fascinates. I couldn't turn away!"-Lisa Jackson, # 1 New York Times bestselling author