Pretty Little Liars Episod 3 (Season 1)

This week, I Saw the third episod of the season 1 of "Pretty Little Liars".
Firstly, in this episod, girls received messages from an unknown person who conclude his messages by the letter "A". It's very scheming !!
Moreover, at the begenning girls were in woods and it's a place which remind them memories with Alison.
During this episod, we discovered that girls hide many secrets !
Then, Noel decided to do a party and at the end of this episod, girls find in woods, a bracelet with Alison's name...