Watch Pretty Little Liars Season 4 Episode 21: She's Come Undone Online

	IMDB Rating: 8.9/10 from 219 votes
	Release: 2014 / Pretty Little Liars / Season 4 / Episode 21
	Genre: Drama \| Mystery \| Thriller
	Director: Chad Lowe
	Stars: Troian Bellisario, Ashley Benson, Lucy Hale
	Synopsis: Emily, Hanna and Spencer are concerned for Aria as they watch their friend crumble after learning shocking news about Ezra. Not knowing what is true or who to trust, Aria goes looking for answers, not wanting to believe this revelation to be true. Spencer is concerned for Aria, but she is not doing so well herself. Trying to prove to her parents and Toby (recurring guest star KEEGAN ALLEN) that she can kick the habit on her own, Spencer has to be careful because one misstep could send her to rehab. Can Spencer really rein it in, or will her constant curiosity and drive be her undoing? Meanwhile, Paige (recurring guest star LINDSEY SHAW) has had enough with Emily's secrets and is determined to stop it.