Marvel's 'The Defenders': 5 Things You Need To Remember Before Watching

This week, Netflix’s Marvel series, "Daredevil," "Jessica Jones," "Luke Cage," and "Iron Fist," will finally come together in "The Defenders." The "Avengers"-style team-up will bring to a conclusion a number of plot elements that were laced throughout all four series, but with a total of five seasons leading into the big crossover, you might have forgotten some of the more pertinent information.