In Marlowe Falls, the river keeps its secrets—and so does Daniel Reed.

Everyone in town knows Daniel. He's the helpful neighbor, the charming substitute teacher, the man who always shows up when someone's in need. But Daniel is also something else. Something no one would ever suspect.

When a teenage girl's body is found near the river, the town mourns. When another vanishes, suspicion creeps in. But Daniel? He watches it all unfold with a practiced calm—because he's been here before. And because he knows something they don't: the river has a way of giving back the things you thought were buried.

As local detective Lena Brooks digs deeper into the string of disappearances, long-forgotten memories begin to rise—and so does the body count. The town's facade begins to crack, exposing a darkness no one wants to believe.

In a place where everyone trusts the wrong man, how many people have to die before someone finally sees him for what he is?

Chilling, atmospheric, and disturbingly intimate, Only the River Knows is a psychological thriller about the lies we tell others—and the ones we tell ourselves.