Consider other plays by Dorfman, such as Windows and Reader, as well as Dorfman's novels, including Hard Rain, Windows, The Last Song of Manuel Sendero, Mascara, Konfidenz, and The Burning City. Especially consider Dorfman's memoir, Heading South, Looking North.
Also consider One for the Road by Harold Pinter, which explores similar themes of rape, torture, and totalitarian regimes.