It was already reported that many of the original cast members will be returning for the special episode including Dianna Agron, Amber Riley and Heather Morris. The lovable Finn Hudson won't be making an appearance due to actor Cory Monteith's tragic death in July 2013. Monteith played Finn on the FOX show. In October Glee remembered Monteith and Finn in a tribute episode titled The Quarterback.. During the episode Rachel (played by Lea Michele) and other students from William McKinley High learned the news that Finn had died.