"When a millennial and a Gen X couple fall into an obsessive friendship, things get dangerous in this addictive novel of suspense by the international bestselling and award-winning author of Our House. When Clare befriends a new young woman at work, neither she nor her partner, Jamie, are sure it'll go well. She and Jamie are approaching fifty and skeptical of most young things. But to their surprise, they have a great time with Melia and her husband, Kit. They share a sharp sense of humor and recklessness that creates an instant bond. But there are some uncomfortable differences, such as the fact that Melia and Kit are obsessed with their struggle to afford the life they feel they deserve. The very life Clare and Jamie seem to be living. Soon the couples are meeting often, and Kit and Jamie are even commuting to work together via riverboat every morning. Until the day Kit doesn't show up at the ferry. When a witness reports that Jamie argued with Kit on the ferry, he becomes the prime suspect. Soon both couples' dark secrets are spilling out, and the dangerous differences between them start coming to light"--