When Ryan Dudley ventures out on horseback and his horse returns without him, Lane and Harper are summoned to unravel the mystery. Dudleys disappearance marks the first anniversary of a young boys murder in the same neighbourhood, and evidence indicates the two incidents are connected. When Dudleys roommate also goes missing and mysterious shootings start happening in the area, Harper and Lane are swept into a feud between neighbours, races, and land owners, all in search of a murderer on the loose for much too long.