When British screenwriter Russell T. Davies created the hit series Queer as Folk, 22 years ago, it was widely considered to be a pioneering moment for the gay community. And yet Davies left one critical thing out—the AIDS crisis. Having come of age in London during the height of the epidemic, he wasn’t yet ready to confront the subject. But now his new HBO Max five-part series, It’s a Sin, sees him take on the painful period. Expertly cast, the show features a slate of young actors, with supporting roles performed by Neil Patrick Harris, Keeley Hawes, and Stephen Fry, who tackle the devastating impact of H.I.V. on London’s queer community with sensitivity, truth, and courage. —Bridget Arsenault