If you like your comedy dark and twisted, irreverent and absolutely “for adults only,” you’ve probably been a fan of HotCity Theatre for ages; and their latest offering, Entertaining Mr. Sloane by Joe Orton, shouldn’t be missed. First, it’s a rare chance to see Orton’s first play, written in 1964. While no longer scandalous, it’s a great touchstone to see how far we have evolved. Second, it has some of the strongest technical elements I’ve seen to date in the Kranzberg Art Center’s black box theater. Third, the pre-eminent comic actor in town, Lavonne Byers, leads the able cast.