*Season Four picks up immediately after the lodge fire. No time has passed*.
November 2011 (Week 1) - Big A (Charlotte) has officially taken over, and she signs most of her "A" threats with: "Kisses, -A". Mona is now being targeted as well, until she realizes what Big A is capable of and it scares her back onto the A-team (401).
November 2011 (Week 1) - Darren Wilden is murdered (401).
November 2011 (Week 1) - Jessica DiLaurentis moves back into the family house in Rosewood (401).
November 2011 (Week 1) - Jenna begins to lose her eyesight again, and she moves to New York (401).