Some secrets wait ten years for the tide to bring them back.

Twelve years married. A lifetime of friends. One week at the beach to remember how it all began.

When Claire Harmon returns to the Carolina beach house where her closest friend, Meg, drowned a decade ago, it is supposed to be a reunion - six old friends, wine on the porch, bare feet in the sand, the easy rhythm of people who have known one another forever. Meg's death was ruled an accident. Everyone has made their peace with it. Everyone except Meg's brother, Tom, who has never believed a word of it.

By the second morning, one of them is fighting for her life on the lower deck, an overnight storm has flooded the only road out, and the people Claire trusts most are trapped together with no way to call for help.

As Claire begins asking the questions no one asked ten years ago, the answers lead somewhere she refuses to look - toward the person who knows her best, sleeps beside her every night, and has been lying to her far longer than she is ready to admit. Solving it will cost Claire the life she built. Looking away will cost her everything else.

A twisty, emotional summer mystery for readers of Liane Moriarty, Lisa Jewell, and Ruth Ware - a story about marriage, memory, and the courage it takes to finally see the people you love clearly.