The author of The Dancing Detective book series is revealed to live in town, and the detectives set out to uncover the author's identity -- interviewing a cavalcade of characters we've met through the season and learning just what community means. Their final investigation will lead them to someone they'd never suspect. / Old Man McGillicuddy teams up with the detectives to track down the key to the city. The community works together to deduce who took the key and just where they're hiding it, all in time for the mayor's ceremony honoring special community members who've helped the community the most this spring!