Talk:Princess Twilight Sparkle - Part 1/@comment-4604642-20131101110841

Nightmare might not be in this episode.

http://www.equestriadaily.com/2013/10/season-4-episodes-one-and-two-expanded.html

That says nothing about Tabitha St. Germain doing Luna/Nightmare Moon's voice. It only says she said does Rarity voice. And before anybody mention the Comic Con spoilers, that could have change.