This week, the movie adaptations of young adult dystopian 'The Hunger Games' come to a end, with the release of 'Mockingjay: Part Two'. Despite the book series that these movies are based on being a trilogy, it was announced shortly before the release of the first movie that the final novel was to be split into two parts. This follows the footsteps of 'Twilight: Breaking Dawn' and 'Harry Potter and the Deathly Hallows', with both conclusions being split into two. Although fans of the franchises may believe that to have an extra movie is a good thing, has the Two Part phase become an expectation? The obvious cause for two-part movies is the economic value of having two films released instead of just the one. Whilst Part One of the Deathly Hallows took in colossal $960 million at the box office, the last film of the series became the eighth highest-grossing film ever, with an intake of $1.34 billion. An extra billion dollars for a split in the final nov...