Murder in small-town Wisconsin.
Children's riddles sent to a small-town newspaper predict grisly murders. Nate, a local police officer, teams with Star, the paper's new editor, to try and stop the killings.
Nate and Star return to piece together clues when a popular local library assistant and his wife are both murdered only a week apart.
A small fortune stolen from the village more than a century and a half ago inspires new murders and more history-based puzzles for Nate and Star.