Writing partners Christopher Markus and Stephen McFeely are no strangers to blockbuster franchises. After adapting the "Chronicles of Narnia" series and several films in the Marvel universe, they were given the daunting task of writing the highly anticipated "Avengers: Infinity War." In this episode, Markus and McFeely discuss how they were able to juggle a massive ensemble cast, multiple storylines spanning several movies, and still create a cohesive and entertaining film.