After an especially rough tackle on the football field, Ash thinks he might be suffering some permanent damage, because suddenly stop signs are blue and always have been. After the second universe-altering hit, he drives a Beemer instead of a Dodge, and a pair of interdimensional twins promises him answers. The more universes he visits, the more Ash has to face perspectives he never thought to consider before, and the closer the universe gets to complete...

"Teenage genius Artemis Fowl and his arch rival Opal battle to the last in this eighth and final book in series"--

Seventeen and already in her sophomore year at NYU, Casey Rhodes sheds disguises effortlessly. It's how she navigates school and avoids the second-guessing that has plagued her since she and her boyfriend Marcus got together. Then Casey starts hearing voices. They terrify her so badly she flees to the remote beach town of Avon where she can sort through her thoughts and reset. But the voices only get more intense... and are now accompanied by visions...

Jason and Rachel's adventures and friendships have made Lyrian more of a home to them than they could have imagined, so now, armed with the prophecy of a dying oracle, they are ready to become Lyrian's heroes whatever the cost to themselves.

After Jason succeeds in finding a way back to Lyrian, he's immediately in more danger than ever. Meanwhile, Rachel and the others have made their own progress--as well as discovered new enemies. As the group ultimately rejoins, they strive to convince their most needed ally to join the war and form a rebellion strong enough to triumph against the emperor.

The magic tree house whisks Jack and Annie away to Australia where they must save some animals from a wildfire.

Having used their magic tree house to travel to India, where they must get a gift to help free the dog Teddy from a spell, Jack and Annie have adventures involving a tiger and other endangered jungle animals.

"In the final book of the Books of beginning trilogy, Kate and Michael must help the magical world prepare for the final war against the Dire Magnus, while Emma must travel to find the final book--the Book of the Dead"--

Tolly comes to live with his great-grandmother at the ancient house of Green Knowe and becomes friends with three children who lived there in the seventeenth century.

When he goes to spend the summer with his great-aunt in the family's old house, eleven-year-old Drew is drawn eighty years into the past to trade places with his great-great-uncle who is dying of diptheria.