Allie Sheridan' world has fallen apart : her brother disappeared, she's getting kicked out of school and she's just been arrested again. Her parents send her away to Cimmeria Academy, a boarding school in the English countryside. There she finds herself among the wealthy and elite. It's a beautiful place. The lifestyle of elegant dances and midnight meetings on the roof dazzle her. But everything is not what it seems. A mysterious group is doing something...

Gossip queen ALEX longs to be seen. Cheerleader TULSI is sick of cutting people on her sharp heart. New kid CLEMENTINE can't escape the violence inside. And wallflower SUNJU is tired of keeping quiet. When a twist of fate brings this unlikely quartet together, sparks and punches fly. They call it 'Girls Night,' an underground fight club that's girls only. Soon every girl at Sterling High is showing up to class with bruised knuckles and split lips....

"After months on the run, Allie returns to Cimmeria Academy to find the school in turmoil. The atmosphere is thick with danger. Overshadowing it all is Nathaniel. He is close, very close, to getting everything he wants. A secret civil war is tearing the British political elite apart. And Allie's family is in the thick of it. Both sides want her. She knows Nathaniel will take her by any means necessary. But she is determined to fight him to the end....

High school seniors Aria, Emily, Hanna, and Spencer have all done horrible things -- things that would put them behind bars if anyone ever found out. And their stalker 'A' knows everything. So far A has kept their secrets, using them to torture the girls. But now A's changed the game. Suddenly the girls are hauled in for questioning, and all their worlds begin to unravel. If A's plan succeeds, Rosewood's pretty little liars will be locked away for...