Of the three Boxcar Children books we've read, the others being #1 and #2, I enjoyed the mystery of this one more than the other two, in which setting and character are more of a focus. The pace of the action was quicker. The clues were "clue-ier" than in the other two, so it was more predictable-- perhaps more formulaic as a result of selecting #102 vs. the beginning of the series. The build up of simple clues is good for the boys, since this is their introduction to mysteries, and they need to be led into trying to solve the mystery as we read.
Joey (3) enjoyed this one so much that he asked to pick out a Boxcar Children story for himself. He picked one with "pizza" in the title. Of course. We'll see how well he sits through it.