User blog comment:Gcheung28/Arrow: Fan Brain - Heir to the Demon/@comment-20644-20140206223529

Spoilers follow.

I noticed that the title of the episode, Heir to the Demon, could have a double meaning. The obvious one is that Ra's al Ghul is the demon (since one of his aliases is "Demon Head") and Nyssa al Ghul is his heir. The other meaning deals with Thea's parentage; Malcolm Merlyn, her true father, is a demon and Thea is his heir. The episode dealt quite a bit with that secret.