A sleepy California coastal town thrives on fishing and summer tourism, but beneath its picturesque surface lurk secrets the waves refuse to forget.

When a mysterious body washes ashore, young lawyer Evelyn Grant returns home for her father's funeral and finds herself swept up in a deadly mystery. A torn piece of paper in a bottle, cryptic notes in her father's old journal, and the whispers of a sunken freighter lead her to uncover a secret smuggling network.

As Evelyn races through rocky caverns, storm-ravaged harbors, and dark docks, she realizes that even the town's most respected figures are not what they seem. Betrayal, danger, and deceit lurk at every turn, and the line between friend and foe is razor-thin.

Evelyn must navigate the tides of deceit to survive, but some monsters wear the best masks, and some secrets are forever hidden by the sea.