Who's In The Box?

"There's someone Ali's so afraid of, she can't come back."

- Spencer

Who's In The Box? is the fourteenth episode and the winter premiere of Season 4 of Pretty Little Liars. It will air on January 7, 2014.

Title and Background

 * With Ali being alive now confirmed, it is assumed that the "box" is a coffin, and this episode could deal with who was buried in Ali's coffin. This has been confirmed by Marlene.

Spoilers for 4B
Note: You need a reliable source for the spoilers below!
 * It's Aria's "turn to really go through the ringer," in 4B. Source
 * Sasha will be in many upcoming episodes. Source
 * Mona will get a new love interest and who it is is shocking! Source
 * There will be evidence that Ezra is A, revealed in Who's In The Box?. It will be used for several episodes as the girls unravel the mystery of Alison's "final" summer with them and who A is. Source
 * Aria will unravel and come undone this season, but for a very good reason! Source
 * Brenda, an academic overachiever, wants to help a scholastic pressured Spencer by giving her, her secret - but for a hefty price. Her secret? Let's say that Emily won't be the only one popping pills. Source
 * Sasha said "There are so many revelations in the second half of this season; it will blow your mind. The answers are right there in front of you and when all is revealed the fans will kick themselves for not thinking of it first."

Main Cast

 * Troian Bellisario as Spencer Hastings
 * Ashley Benson as Hanna Marin
 * Shay Mitchell as Emily Fields
 * Lucy Hale as Aria Montgomery
 * Janel Parrish as Mona Vanderwaal
 * Sasha Pieterse as Alison DiLaurentis

Guest Cast

 * Lindsey Shaw as Paige McCullers
 * Ian Harding as Ezra Fitz
 * Keegan Allen as Toby Cavanaugh
 * Laura Leighton as Ashley Marin
 * Tyler Blackburn as Caleb Rivers
 * Andrea Parker as Jessica DiLaurentis
 * Nolan North as Peter Hastings
 * Larisa Oleynik as Maggie Cutler

Trivia

 * The table read was on July 16, 2013.
 * Filming began on July 17, 2013, and ended on July 25, 2013.