The day begins innocently enough: Annie and her friends are enjoying a leisurely afternoon of sunbathing when an ominous storm approaches. In the scramble to leave, Annie realizes her cousin Gina is missing. After a fruitless search in the rain, the teens call the police. And as the hours tick by, Annie's fear for Gina's safety mounts. How could this have happened? Wasn't anyone watching her? Didn't anyone see? The possibilities are too horrific to consider, and Annie turns for support to the friends who were with her and Gina on that fateful afternoon. But as the days pass without a trace of the lost girl, accusations begin to fly between friends, and disturbing information about one of their own comes to light. At first Annie refuses to believe it. But as the evidence begins to mount and the accused does nothing to clarify the situation, Annie realizes the relationships she once held dear are not at all what they seemed. And if a girl can't trust her best friends...who can she trust?