'The Leftovers' season-finale director reveals the biggest challenges of the episode

Season two of "The Leftovers" came to a close Sunday night with an episode that tied up a whole lot of loose ends while also being one of the most thrillingly entertaining of the season.

From the Guilty Remnant showing they still have a few tricks left, to Kevin (Justin Theroux) singing karaoke to save his life, this finale was so packed that we asked the director of the finale, Mimi Leder, to give us some insight.

Here she looks back on three of the biggest highlights from the episode and explains the challenges she confronted to pull them off.