Season 4, Episode 17 Bite Your Tongue

First Aired: January 28, 2014

Aria's brother befriends Mona, but Aria disapproves. Elsewhere, Spencer digs into a new lead from Ali's diary and uncovers something shocking; Hanna's love of crime novels leads her to investigate Ali's grave; and Emily's dad grows worried about her.

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  • Premiered: June 8, 2010
  • Rating: TV-14
  • Premise: Four estranged friends are reunited because of mysterious messages that suggest their missing friend is watching them and that someone knows their deepest secrets. Based on the series of books by Sara Shepard. (more)

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