In the blink of an eye, everyone disappears. Gone. Except for the young. There are teens, but not one single adult. Just as suddenly, there are no phones, no Internet, no television. No way to get help. And no way to figure out what's happened. Hunger threatens. Bullies rule. A sinister creature lurks. Animals are mutating. And the teens themselves are changing, developing new talents - unimaginable, dangerous, deadly powers - that grow stronger by the day. It's a terrifying new world.

Mara Todd wakes in a field of dead grass, a heavy mist pressing down on her. She is terrified, afraid that she is dead. She can't remember who she is or anything about her past. Is it because of the boy who appears? He calls himself the Messenger of Fear. If the world does not bring justice to those who do evil, the Messenger will. He offers the wicked a game. If they win, they go free. If they lose, they will live their greatest fear. Either way, their sanity will be challenged.

Drunk customers. Shoplifting raccoons. Otherworldly visitors. As night-shift clerk at the 24-hour gas station at the edge of town, Jack has pretty much seen it all. That is, until his best friend reveals the body of a local politician hidden in the trunk of a car, setting off a chain of events with apocalyptic potential. Soon, Jack finds himself entangled in a supernatural conspiracy involving monster hunters, sociopaths, doomsday cultists, and...garden gnomes?

Twelve-year-old Percy Jackson is about to be kicked out of boarding school...again. No matter how hard he tries, he can't seem to stay out of trouble. But can he really be expected to stand by and watch while a bully picks on his scrawny best friend? Or not defend himself against his pre-algebra teacher when she turns into a monster and tries to kill him? Of course, no one believes Percy about the monster incident; he's not even sure he believes himself.

When Thomas wakes up in the lift, the only thing he can remember is his name. He's surrounded by strangers - boys whose memories are also gone. Outside the towering stone walls that surround them is a limitless, ever-changing maze. It's the only way out - and no one's ever made it through alive. Then a girl arrives. The first girl ever. And the message she delivers is terrifying: Remember. Survive. Run.

I Am Number Four: The Lost Files: Secret Histories is the second collection of action-packed novellas from Pittacus Lore. Initially published separately as digital originals, these three stories are now together in one volume.

Jason has a problem. He doesn't remember anything before waking up on a school bus holding hands with a girl. Apparently she's his girlfriend Piper, his best friend is a kid named Leo, and they're all students in the Wilderness School, a boarding school for "bad kids." What he did to end up here, Jason has no idea—except that everything seems very wrong.

Fifteen-year-old Benny Imura lives in a world infested with zombies where, when a kid turns 15, he must get a job to continue receiving food rations. Benny has no interest in the family business of zombie killing, but figures he doesn’t have much of a choice. He’s tried out a bunch of other jobs, and hasn’t found anything he likes. But as Benny starts training with his brother, he learns things about being human that he never expected.

Jonathan Forest should never have hired Sam. It was a sentimental decision, and Jonathan didn't get where he is by following his heart. Determined to set things right, Jonathan orders Sam down to London for a difficult talk…only for a panicking Sam to trip, bump his head, and maybe accidentally imply he doesn't remember anything?

Teens across the globe have developed incredible powers known as Legacies. Although they were meant to use these abilities to help the world, dark forces have been working against them from the shadows. Six and Sam Goode used to be part of a covert group that investigated suspicious incidents surrounding these Human Garde. Then they discovered they could no longer trust who they were working for and quit. But they’ll still do whatever it takes to protect these teens.

As the son of Hades, Nico di Angelo has been through so much, from the premature deaths of his mother and sister, to being outed against his will, to losing his friend Jason during the trials of Apollo. But there is a ray of sunshine in his life—literally: his boyfriend, Will Solace, the son of Apollo. Together the two demigods can overcome any obstacle or foe. At least, that's been the case so far . . . Now Nico is being plagued by a voice calling out to him from Tartarus, the lowest part of the Underworld.

The Earth is being invaded, but no one knows about it. When Jake, Rachel, Tobias, Cassie, and Marco stumble upon a downed alien spaceship and its dying pilot, they're given an incredible power - they can transform into any animal they touch. With it, they become Animorphs, the unlikely champions in a secret war for the planet. And the enemies they're fighting could be anyone...even the people closest to them.

After the first wave, only darkness remains. After the second, only the lucky escape. And after the third, only the unlucky survive. After the fourth wave, only one rule applies: Trust no one. Now, it's the dawn of the fifth wave, and on a lonely stretch of highway, Cassie runs from Them. The beings who only look human, who roam the countryside killing anyone they see. Who have scattered Earth's last survivors. To stay alone is to stay alive, Cassie believes, until she meets Evan Walker.

Fourteen-year-old Ozzy lives near Portland, Oregon, and is desperate for help. His scientist parents have been kidnapped after discovering a formula that enables mind control. Their work was so top secret that Ozzy is afraid to go to the police, but without help, he fears he'll never find his parents. Then he stumbles across a classified ad in the local newspaper that says "Wizard for Hire. Call 555-SPEL." Ozzy has read about wizards in books like Harry Potter, but wizards couldn't exist today, could they? After Ozzy meets the wizard Labyrinth - a.k.a. Rin - he's even more skeptical.

Tally is about to turn sixteen, and she can’t wait. In just a few weeks, she’ll have the operation that will turn her from a repellent ugly into a stunningly attractive pretty. And as a pretty, she’ll be catapulted into a high-tech paradise where her only job is to have fun. But Tally’s new friend Shay isn’t sure she wants to become a pretty. When Shay runs away, Tally learns about a whole new side of the pretty world—and it isn’t very pretty. The authorities offer Tally a choice: find her friend and turn her in, or never turn pretty at all. Tally’s choice will change her world forever.