Pretty Little liars: The sixth liar

Evelyn Jareau is Alison's best friend. Where ever Alison went, Evelyn would follow right behind. Evelyn knew every single secret that Alison knew...or so she thought. Soon Alison would befriend Aria,Spencer,Emily and Hanna and the six of them became inseparable. But after a sleepover gone wrong,the four other girls slowly drifted apart from each other but they would still stay in contact with Evelyn but it wasn't like it used to be. A year later the five of them all reunite back together again as Aria returns from her vacation but as she does, a familiar stalker that Evelyn knows all too well also comes back,known as...A