A dangerous smuggling ring, a trail of hidden codes, and a city built on secrets-but trusting her heart may be the greatest risk of all. Detective Mason McCready has spent his career hunting criminals along the Mississippi River, but this case cuts closer to the bone. A powerful crime boss is tightening his grip on the river towns, corruption is creeping into the police ranks, and the man Mason's been chasing has vanished into the mist, taking deadly secrets with him. As loyalties blur and danger closes in, Mason must decide how much he's willing to risk to see justice served. Lexi Taylor has made a name for herself breaking codes others can't touch, but this investigation is personal. Her brother's death is tangled in the very operation Mason is trying to dismantle, and every clue they uncover draws them deeper into a world of hidden ledgers, whispered alliances, and river routes soaked in betrayal. As threats mount, Lexi must rely not only on her sharp mind, but also on a detective she's learning she can trust with more than the truth. With a traitor lurking in the shadows and time slipping through their fingers, Mason and Lexi race from river towns to shadowed safe houses, following a trail that could bring down an empire-or cost them everything.