I. Marlene King

Four friends band together against an anonymous foe who threatens to reveal their darkest secrets, while unraveling the mystery of the murder of their best friend. (imdb)

Five strangers are connected by the curse that has plagued Ravenswood for generations. (imdb)

An ordinary college student's big break in a Hollywood blockbuster, has her in an undeniable chemistry with her two co-leads. (imdb)

Five friends on a dark night ... have carried their friend Acelia joke ... at the same tonight have disappeared Acelia ... A year after her disappearance and not to correspond to the four girlfriends when they meet again the news to get their friend to receive , but she had died .. .. I began spilling messages from an unknown person called A and here begins the real game (imdb)