Buried Prey is a Lucas Davenport novel. You don't have to read the whole Prey Series, but it would be worth it to start from the beginning and end up here. These are some amazing books that keep you turning pages late into the night.
In this novel Lucas is haunted by two bodies that are found in a construction site. They're the bodies of two sisters who were kidnapped and murdered. They were the first case he worked on as a plain clothes detective. The location of the bodies proves that the man he helped collar back then was not the killer. Lucas blames himself for not finding the real kidnapper. Then someone very close to Lucas is gunned down by the killer and nothing will stop Lucas until this man is no longer a threat to anyone. I couldn't put this book down. Very highly recommended.