When Jack is struck by a hit-and-run driver, it sparks some unexpected truths and the return of a threat from Jack's past. As Jack recovers, he and Joan track down Ian's long-lost son, who holds the keys to the mystery. But is she ready to put the past to rest? And will the new threat facing Jack see the end of this journey together?

El regreso de una figura familiar de sus viajes le permite a Joan reconstruir la verdad sobre su esposo, mientras surge una amenaza siniestra de los días de policía de Jack.