Do not become alarmed

the long version

"When Liv and Nora decide to take their families on a holiday cruise, everyone is thrilled. The ship's comforts and possibilities seem infinite. The children--two eleven-year-olds, an eight-year-old, and a six-year-old--love the nonstop buffet and the independence they have at the Kids' Club. But when they all go ashore in beautiful Central America, a series of minor misfortunes leads the families farther and farther from the ship's safety. One minute the children are there, and the next they're gone. What follows is a riveting, revealing story told from the perspectives of the adults and the children, as the once-happy parents--now turning on one another and blaming themselves--try to recover their children and their lives."--