Pretty little liars- From the beginning

4 pretty girls at Rosewood have shared almost all their secrets to the leader of their clique, infact the leader of the town- Alison Dilaurantis. But Alison kept her own secret to herself, even from the girls who cared about her more than anything. ALISON HAD A TWIN SISTER. This story is about the 5 or shall i say 6 (including her twin SISTER- Courtney) came to be enemies/frienamies/ murderes or bffs 4 life. Aria, Spencer, Hannah and Emily become the "Pretty Little liars" after having no idea about their murdered BFF. Since the dead body was found, the 4 girls started getting anonymous notes from someone -A
whether Ali was who everyone thought she was, is something the 'liars' will never know unless they keep digging the hole!