McCrumb has a tendency to toss in one completely unrealistic plot device to keep her stories moving in the way she wants them to go. In The Hangman's Beautiful Daughter, it's the ridiculously non-existant guardianship of the Underhill teens. Can you say, "Ward of the state?"
Also, what was with the whole thing about the Judds? Particularly since all the facts were wrong. McCrumb has Martha tell Spencer that the liver is the one organ that doesn't get better, when reality is exactly the opposite. The liver is the ONLY regenerative organ in the body. Also, what's with the talk of the hepatitis coming from bad road food? If you don't want to go into the modes of transmission of hepatitis C, don't make it a subplot. As someone with a family member with hep C, the misinformation here really annoyed me. It's horribly nitpicky to say it affected my enjoyment of the rest of the book, but I kept thinking, what other facts has she gotten completely wrong? not her best effort at all.