With a string of unsolved murders up and down the Mississippi River, the FBI assembles a task force, assigning their best Minnesota field agent, Grace Ford, to partner with an agent from their Louisiana office. Despite their culture clash, the two must work together to traverse the country, crack the hardest cases, and to stop the next killer before it's too late.
Unusually low tides reveal a string of bodies, left to drown, and the mark of a new serial killer. Grace must venture down south, out of her backyard and her comfort zone, to crack the case, but this killer may just be one step ahead of her.
