And the other aspect of Second City’s reputation, improv, is a key element of several components of this clever revue. There’s a bit of a murder mystery that changes nightly, a song created on the spot and more. In fact, as this show’s long run continues (at least until July 1), you can be sure that timely tidbits will be added to keep it fresh. Tuesday-Sunday. Through July 1. $41-$74. Playhouse in the Park. 962 Mount Adams Circle, Mount Adams. 513-421-3888, www.cincyplay.com.