The Coin Collector: A Nathan Perry Mystery in Bloomington, MN

When a coin convention comes to Mystic, Massachusetts, the town has another murder on its hands.
Returning from a month-long paternity leave, Detective Nathan Perry plunges into an investigation of the mysterious death of coin collector Chuck Blanton after determining he was killed over a rare coin.
His task becomes more complicated when a nationally known journalist, Robin Fisher, wants the same answers as him. As the leads and suspects mount, and finding no one that has actually seen the coin, Nathan is not sure whether she will be a help or a hindrance.
Time begins running short, but Nathan is determined to entangle the mystery surrounding the rare coin in order to bring justice to the coin collector's killer.