The Only Survivors by Megan Miranda

A gripping psychological thriller unfolds as a group of former classmates reunite on the tenth anniversary of a tragic accident that claimed the lives of several of their peers. Each survivor is bound by a pact of silence, but as they gather at a remote beach house, long-buried secrets begin to surface, threatening to unravel the fragile bonds that hold them together. As tensions rise and trust erodes, the survivors must confront their past and the haunting question of whether the accident was truly an accident or something more sinister.

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