Four old friends from Rosewood, Pennsylvania are all trying to hide secrets. Spencer has been seeing her sisters boyfriend, Hanna is making herself sick to try and look perfect, Aria has had a failed romance with her teacher and Emily is worrying over feelings she is having for her friend Maya.
However they all have a bigger secret they are trying to protect, the part they and their dead friend Alsion played in the blinding of a girl named Jenna. Alison was missing in the first book of this series and the 4 girls were all getting messages from someone calling themselves 'A' threatening to spill their secrets who they presumed was Alison, but since then her body has been found and buried but the messages still continue leaving the girls worrying and wondering just who A can be.
This book is even more mysterious than the first and I absolutely loved it, I can't wait for the third book as there is so many more unanswered questions!