Tabitha Crumb has the worst parents ever. They are headed to South America and plan on sending her to an orphanage. Her only friend is her rat Pemberly and her only interest appears to be Inspector Pensive detective novels. So it is a shock when she is invited to a weekend with a countess along with five other children. Turns out all six kids were adopted and one of them is the countess's grandchild. The only problem is the countess is kind of evil and the children keep disappearing in the mysterious manor house. So Tabitha uses what she has learned from Inspector Pensive to solve the mystery.

Interesting story with quite a few twists and turns. The audiobook was really well done and I enjoyed listening to it. It was probably not my favorite, but there wasn't anything really wrong with it. I liked the twin twist.