*It has been almost 5 months since Maya’s murder & Mona’s "Original A" reveal.
Late August 2011 - Mona, who has been a patient at Radley for 5 months, has been deep into a relationship with Big A (Charlotte) since she was admitted. Charlotte has already been a patient there her entire life and befriended Mona as soon as she was admitted. After Mona tells CeCe all the stories about the Liars, Charlotte recruits Mona & "Original A" is back in the game, with "Big A" as the new leader. Mona later swears that she was too drugged up to remember Charlotte from their stay at Radley together, but this whole story is off (301).
Late August 2011 - "Big A" (Charlotte) anonymously begins to take over the game from Mona. Although "Original A" is still predominant this season, we as viewers finally start to see Big A’s influence creep in (301).
August 29th, 2011 - Emily wakes up at Alison’s grave, with the body missing from the ground. Upon Charlotte’s request, Mona dug up the grave & stole (Bethany’s) bones. Charlotte wanted to see whether Ali was really alive or not. Red Coat is also present this night, but we aren’t sure if it was Alison or Sara Harvey (301).
September 1st, 2011 - It has been two years since Alison’s disappearance & the Liars start Senior year at Rosewood High (301).