S.J. Clarkson, a director and executive producer on Marvel and Netflix?s The Defenders, has revealed why the show?s New York superheroes don?t meet up in the first episode. The Defenders is Marvel TV?s first-ever major crossover event, bringing Daredevil, Jessica Jones, Luke Cage and Iron Fist together to fight The Hand ? a mysterious group that operates under the supervision of the enigmatic Alexandra.