After a dying criminal confesses that his loot has been stashed "in the tower", the Hardy boys make an astonishing discovery.,

Fifteen-year-old Tory and her "viral" friends, who contracted heightened, wolflike senses during an experiment gone wrong, investigate an abduction case and make some troubling new discoveries about their powers.

"The Virals must find a geocache concealing a bomb--and the clock is ticking."--

When one of their tightly-knit group mysteriously disappears, four high school girls find their friendship difficult to maintain when they begin receiving taunting messages from someone who seems to know everything about their past and present secrets.

"Blaming herself for her best friend Erica's swimming death, seventeen-year-old Bryn tries to make a fresh start by burying her memories of that awful night. But when a Twitter post from "EricaNShaw" pops up on her feed and a chilling voice mail appears on her phone, she realizes that someone isn't ready to let go of the past"--Provided by publisher.

After their missing friend's body is found and another of their friends commits suicide, four former best friends live in fear of their secrets being exposed by someone who is stalking them via their cell phones.

"Without the evil vampire Bishop ruling over the town of Morganville, life has changed--dramatically. The resident vampires have made major concessions to the human population. With their newfound freedoms, Claire Danvers and her friends are almost starting to feel comfortable again--almost. Now Claire can actually concentrate on her studies, and her friend Eve joins the local theater company. Yet when one of Eve's cast mates goes missing after starting...

"Three teens at a summer program for gifted students uncover shocking secets in the sanatorium-turned-dorm where they're staying--secrets that link them all to the asylum's dark past"--

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.

The stalker's identity has finally been revealed, but Spencer, Emily, Hanna and Aria are bound to repeat the past, and continue to be bad.