The Case of the treehouse spirit and other solve-it-yourself whodunits

There aren't too many kid who do their homework in an empty interrogation room while their parents solve crimes. But then again, Emma Riley is not your average thirteen-year-old. For one thing, she loves puzzles, and also, she spends a lot of time at police headquarters, which has made her really good at solving cases! In face, whenever there's something amiss in Beaverton, Indiana, you can be sure Emma is read to solve the case.