Pretty little liars also known as PLL is a series that broadcast white AXN from the United States. Its first chapter was issued on June 8, 2010 and now, go through 6b season.
The series is about 5 girls, Alison, Aria, Hanna, Spencer and Emily.
Then there are also 3 boys (as not ) Caleb, Ezra and Toby.
In the pilot d this series, Allison disappears and months later found his body, and from that day, they start to receive calls and messages blackmailing a person of unknown identity who calls himself A.
That person is discovered in season 6.
It is a series of Drama and intrigue is very good.
I recommend you see it.