The body of a young woman is found on Harriet Island near the Mississippi River. It appears to be a simple case of murder and revenge. But what begins as a routine investigation for St. Paul Police Detectives John Santana soon morphs into something far more sinister. Trusting his instincts and determined to find justice, Santana relentlessly follows clues through a maze of political intrigue and deadly secrets, all the while wondering who he can trust, and whether he can survive long enough to resolve the case, save the city from a catastrophe and keep the woman he loves safe.