Former best friends Emily, Aria, Hanna, and Spencer continue to live in fear as they struggle to keep hidden even more secrets and someone new begins stalking them via their cell phones.

Former best friends Hanna, Aria, Spencer, and Emily, who lost their best friend and leader, Alison, years ago when she disappeared, find themselves in grave danger when they pursue the truth about Alison.

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.

After surviving their latest encounter with A, high school seniors Aria, Emily, Spencer, and Hanna must try to convince the police that the real A is still on the loose, all while trying to stay alive.

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

Fifth grader Penny, who doodles to cope with anxiety, worries that her best friend is drifting away. Why does the cubby room always smell like farts? Who etched the words "I Am Bug Man" inside my desk? Why is Mom suddenly acting like she has a secret? Nobody said starting fifth grade would be easy, and Penny Lowry's anxiety means a million questions are always spinning through her thoughts. Luckily she's got a lot to look forward to, like her favorite...