Used. Paperback. When a devoted husband vanishes into thin air, leaving behind a frantic final instruction to protect his prickly stepdaughter, his dazed wife quickly realizes her marriage was built on quicksand. Laura Dave delivers a breathless, fast-paced thriller that pairs domestic suspense with a reluctant road trip between two women who barely tolerate each other. As federal agents circle and old identities unravel, Hannah and her teenage co-investigator must sift through a maze of missing-person clues to find out who Owen actually was. It is a wildly addictive mystery about family secrets that proves you truly never know the person sleeping next to you.