Just when the current seems safer, an unseen danger emerges and threatens to destroy everything. When Cassidy Livingston finds a journal hidden deep in the recesses of her ice cream truck, her curiosity kicks into high gear. Islanders suspect that Elsa, the journal's owner, didn't die accidentally. Her final entry indicates their suspicions might be correct and that what Elsa observed on her final night may have led to her demise. Against the advice of Ty Chambers, her former Navy SEAL boyfriend, Cassidy taps into her detective skills and hunts for answers. But her search only leads to a skeletal body and trouble for both of them. As helplessness threatens to drown her, Cassidy is desperate to turn back time. Can Cassidy find what she needs to navigate the perilous situation? Or will the riptide surrounding her threaten everyone and everything Cassidy loves?