With less than a day before 'Pretty Little Liars' Season 4B premieres, viewers cannot help but wonder about the mystery surrounding Alison's fake death. What is her motive and who pushed her in making such extreme decision?

The recently released 'Pretty Little Liars' Season 4 Episode 16 synopsis gave hints as to what viewers must expect. In the episode entitled "Close Encounters", the girls will have a chance to hear something from Alison:

"Shana returns to Ravenswood to tell Emily that she has a message from Ali, but can Emily and the girls trust Shana with all that they know about her? And when Shana ups the stakes and says that Ali wants to meet Emily - and only Emily - could it all be part of an "A" plan, or is Emily really Alison's favorite? With Emily becoming more hopeful by the minute, Spencer is determined to not let her friend get hurt. Meanwhile, Aria and Hanna deal with matters of the heart."

If Shana is the one who will bring Ali's message to the girls, does it mean that she's the one who has been helping Ali all along? Who else knows about the truth behind Ali's disappearance?

The episode will likewise shed light to the "matters of the heart" Aria and Hanna will deal with. Aria might doubt Ezra's intentions and start her own investigation.

"Pretty Little Liars" Season 4 Episode 16 "Close Encounters" will air on January 21, 2014 on ABC Family.