Martin Sherman's worldwide hit play Bent took London by storm in 1979 when it was first performed by the Royal Court Theatre, with Ian McKellen as Max (a character written with the actor in mind). The play itself caused an uproar. "It educated the world," Sherman explains. "People knew about how the Third Reich treated Jews and, to some extent, gypsies and political prisoners. But very little had come out about their treatment of homosexuals." Gays...