Vep” uses its penny-dreadful lampoon as a framework on which to hang everything from references to and quotes from “Rebecca,” Shakespeare, “Gaslight,” Oscar Wilde, “The Mummy’s Curse,” Poe, “Wuthering Heights,” Dickens and other sources, not to mention the theatrical process itself. Moscone and his designers and cast build on that with visual, musical and other gags at every turn. (Robert Hurwitt)