Sara Shepard

After high school juniors Spencer, Emily, Hanna, and Aria think they have seen Ali, their missing and presumed dead friend, they pursue clues from a mysterious stalker, trying to find out if she is still alive.

Four girls living in a wealthy suburb discover the identity of a stalker who has been sending them shocking text messages, and uncover the mystery of who killed their childhood friend.

Seventeen-year-old Emma Paxton steps into the life of her long-lost twin Sutton to solve her murder, while Sutton looks on from her afterlife.

"Penny and her friends find an old map that takes them on a search through their town for hidden treasure"--

"Four teens who met on an online cold-case solving forum attempt to solve another teen's murder"--

After her video goes viral, Delilah Rollins knows everything is going to change. She has no idea how much. Jasmine Walters-Diaz, a child star turned media darling, can practically break the internet with the posts of her in her classic Lulu C. rainbow skirt-- but her perfect life is a fraud. Fiona Jacobs is the kind of girl for whom a crowd parts, but on the inside she is a hot mess. Scarlet Leigh is styled to perfection: she is perfection on Instagram;...

Poppy, Aster, Corrine, Natasha, and Rowan are the heiresses of the Saybrook's jewellery empire, a family business that is known for both its wealth, and a very old curse that leads to family members dying suddenly. When one of the 5 heiresses is killed, and an online gossip site publishes a statement "One Heiress Down, 4 more to go", an investigation is opened.

"It's springtime in Rosewood, but while everyone else is searching for the perfect prom dress, Hanna, Spencer, Emily, and Aria are on a different kind of hunt: They're looking for A...Hanna puts her campaign for prom queen on the back burner to volunteer at a burn clinic, where one of A's victims is recovering. Emily digs into Ali's past at the mental hospital with some very crazy consequences. Spencer contacts an amateur private eye to help her stalk...

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...

When twenty-one-year-old social media star Chelsea Dawson disappears, Seneca, Maddox, Aerin, and Madison, noticing that she looks exactly like Aerin's murdered sister, Helena, investigate, determined to find the connection.