An interesting concept. In the first book in a series targeted to early readers, Detective Dan solves the mystery of the missing marbles of a greedy friend. It is similar to readers in the "I can read" series, but these include biblical principles. I think the execution was decent, in part because I like to see characters where the Bible is a part of everyday life. I would like to have seen the protagonist examine himself rather than identifying greed in his friend and her brother.