Captain America: The First Avenger
In October 2013, development began on a potential fourth film, "The Silver Chair", with the Mark Gordon Company producing. On December 5 of that year, "Finding Neverland" scribe David Magee was announced as the screenwriter for the film. Joe Johnston (director of "Captain America: The First Avenger," among others) was brought on board to helm the movie in April 2017.