Grave Secret — Charlaine Harris

Lightning-struck sleuth Harper Connelly and her stepbrother Tolliver take a break from looking for the dead to visit the two little girls they both think of as sisters. But, as always happens when they travel to Texas, memories of their horrible childhood resurface.

To make matters worse, Tolliver learns from his older brother that their father is out of jail and trying to reestablish contact with other family members. Tolliver wants no part of the man- but he may not have a choice in the matter.

Soon, family secrets ensnare them both, as Harper finally discovers what happened to her missing sister, Cameron, so many years before.

And what she finds out will change her world forever.