in 6th Grade Courtney told Ali that there were 4 girls on the lawn (the liars)
Ali rolled her eyes and walked off. When she was gone Courtney walked out and talked to them.
Then in 7th grade Courtney knew Ali would be back so she wanted to keep the blinds shut
But Spence got in a fight with Courtney and Courtney rushed to see Ian. Instead of Ian being there Alison was and she tried to kill Courtney but someone got there first
Courtney knew who it was but she died before she could say anything
Then in Wanted Mrs.DiLaurentis introduced real Ali as Courtney. Real Ali pretended she was their Ali to make them friends but Aria didnt want to forgive her.
Then Alison kissed Noel and told Aria that he forced himself on her
Aria angrily went to the Poconos
Then Ali asked to recreate the night she killed Courtney
They said ok so they did it
Then Spencer and Aria woke up to find Ali gone. After Hanna and Emily woke up they smelt gasoline and panicked.
Ali slipped a letter under the door informing them of her evil deeds
They opened the closet to see Ian's rotting corpse under it was Melissa bound and gagged
Through a secret passageway they made it out. after they made it Emily opened the door
Okay. So, yes mona is the very first A. after Mona died, The Real Alison became the new A. BUT!!!!! When ali tried to kill the girls with a fire, they locked the door on her when they escaped. Did Ali live...or is someone els the new, third A?
Cece drake and Alison are the red coats, and what I believe is "helping" out the girls.
So alison isn't with the A team.
The redcoats are masked because Alison is alive, and don't want anyone too know it.