"The last kids may have escaped the forbidden fortress by the skin of their teeth, but there isn't much to celebrate. Thrull has what he needs to complete the Tower, Rezzoch will most certainly come to Earth, and the world as they know it will cease to exist. Except Jack's Cosmic Hand is now even more powerful than he realized, and it might just be able to stop the inevitable from happening. To get the answers he seeks, he'll need to travel farther...

After the sea levels rise and the world ends, Martha and other survivors are stuck on a giant killer jellyfish, drifting off shore--if boredom does not kill them, maybe their escape attempts will.

Forced to participate in an extra credit project in the middle of nowhere, classmates Baxter, Abigail, Turner and Emerson must survive the wilderness with only a survival handbook and each other after their instructor goes missing.

"Oliver loves mountain biking on rocky, wooded trails. And he has an unlikely partner--his much older half sister Morgan. One summer evening while out with their dog Digby, Oliver tries to impress Morgan by leading her down a new trail he claims to know. They end up at the bottom of a canyon with no choice but to push their bikes up the steep trail. Then disaster strikes. Morgan slips and badly injures her ankle. With no cell service, it's up to Oliver...