Set in the fictional town of Rosewood, Pennsylvania, the series follows the lives of Spencer Hastings (Troian Bellisario), Hanna Marin (Ashley Benson), Aria Montgomery (Lucy Hale) and Emily Fields (Shay Mitchell), four girls whose clique falls apart after the disappearance of their queen bee, Alison DiLaurentis (Sasha Pieterse). One year later, they begin receiving messages from a mysterious figure using the name "A" who threatens to expose their secrets. At first they think it's Alison herself, but after she is found dead, the girls realize that someone else knows their secrets—including long-hidden ones they thought only Alison knew.


Genre:
Teen drama
Mystery
Thriller


Starring:
Troian Bellisario
Ashley Benson
Tyler Blackburn
Holly Marie Combs
Lucy Hale
Ian Harding
Laura Leighton
Chad Lowe
Shay Mitchell
Janel Parrish
Sasha Pieterse


Country of origin: United States
No. of seasons: 3
The series hasn't finished yet.

link

But I think I'd rather stick with GG.