Another of my recent forays into police procedurals set in the back blocks of America, this time in rural Pennsylvania, “An Unsettled Grave” is the second outing for inexperienced but whip-smart Detective Carrie Santero. She teams up again with relentless hunter of killers, Jacob Rein (this time jobless and homeless after the furies of the series’ Book 1), when a child’s foot emerges from a grave. Secrets three decades old are re-ignited. Bernard Schaffer writes smoothly and Santero in particular works well as a feisty protagonist. If I tired a little of flashback scenes (I know they have their place but I prefer present-day drama in procedurals), the climax satisfied and the entire read flowed like a river.