Have you ever heard of a group therapy technique that lets interracial couples hash out dynamics of desire and power by pretending they’re at Tara or Twelve Oaks? It’s called “antebellum sexual performance therapy”—completely fabricated—and it’s the outrageous premise of Jeremy O. Harris’s Slave Play. For transgression it’s a 10. For daring, also a 10. The question is: Can Broadway handle it? —L.J.