Because Ali thought that the girls were starting to not to trust her.and also shed love the attention.
Moona for begining then Alison
Alison is A and she will go where all the bad people go ,,, TO HELL
At a mental place. And is made to live her dead twin sister
Courtney is Alison's twin sister in Pretty Little Liars.
Ian took them that's why he oppose killed Alison
Yes. She had the girls and the girls fooled the whole time!!
yes,i've read all the books and yes she does she is mentally ill and convinces people that SHE is alison
Because Spencer put together all the clues that Mona had accidentaly given to the girls.
She plays tricks on them because they were mean to her when she wasn't popular
Well,Alison is found because she is A.Alison has atwin sister and that twin sister was the one who died.Alison did all the stuff to Spencer,Aria,Emily,and Hanna.
when Maya was cleaning out the house she put Alison's boxes outside so Mona gets her stuff like Alison's diary and reads the girls secrets and Alison's from then she texts them and follows them
Alison had a twin sister Courtney, and she was pretending to be Alison when they sent the real Ali away because they thought she was Courtney. Courtney was kinda rude to the 4 girls but Alison did not like the girls at all. Hope i answered your question :)