Cincinnati Playhouse in the Park presents Thunder Knocking on the Door. The Playhouse’s biggest musical hit of the last 20 years returns! Once upon a time, a mysterious, blues-playing stranger named Marvell Thunder arrives at the door of the Dupree family with a unique challenge — a “cutting contest,” in which twin guitars are the weapons of choice. If he has his way, the epic musical showdown will change everyone’s life forever. A mystical, magical celebration of love, family and the exhilarating power of music to free your soul.