Noseholes and elephants! A pet-eating monster interrupts a perfect playdate with Princess Sneezewort . . . but who is that new masked avenger? Princess Magnolia and Princess Sneezewort have plans . . . mysterious plans, like a princess playdate! They dress-up slam! They karaoke jam! They playhouse romp and snack-time stomp! But then a shout from outside Princess Sneezewort's castle interrupts their fun. It's a monster trying to eat someone's kitty!...

"The Princess in Black and her friends are enjoying a day of sun and sea on Princess Sneezewort's royal boat when a real, live mermaid princess emerges from the waves! Eeeeeee! Princess Posy needs their help protecting her very cute sea goats from being eaten by a very greedy kraken. But the princesses and the Goat Avenger quickly realize that fighting underwater can be tough for land dwellers, and only the mermaid Princess Posy can save the day....

"Enter a school of magic unlike any you have ever encountered: There are no teachers, no holidays, and no friendships save strategic ones. Survival is more important than any letter grade, for the school won't allow its students to leave until they graduate . . . or die. The rules are deceptively simple: Don't walk the halls alone. And beware of the monsters who lurk everywhere. El is uniquely prepared for the school's dangers. She may be without...

Tiffany Aching, a young witch-in-training, learns about magic and responsibility as she battles a disembodied monster with the assistance of the six-inch-high Wee Free Men and Mistress Weatherwax, the greatest witch in the world.

In 1985, six men and one woman are called back together to search for a creature of unspeakable evil that had stalked them as children. Welcome to Derry, Maine. It’s a small city, a place as hauntingly familiar as your own hometown. Only in Derry the haunting is real. "They were seven teenagers when they first stumbled upon the horror. Now they are grown-up men and women who have gone out into the big world to gain success and happiness. But the...

In 1870s London, a young orphan girl becomes the apprentice to a man who traps monsters for a living.

All year the half-bloods have been preparing for battle against the Titans, knowing the odds of victory are grim. Kronos's army is stronger than ever, and with every god and half-blood he recruits, the evil Titan's power only grows. While the Olympians struggle to contain the rampaging monster Typhon, Kronos begins his advance on New York City, where Mount Olympus stands virtually unguarded. Now it's up to Percy Jackson and an army of young demigods...

"Jack teams up with the evil King Wretch in order to convince his friends to stay with him instead of going in search of others who may have survived the monster apocalypse"--

When Harold and George turn fourth-grade teacher Ms. Ribble into the evil Wedgie Woman, she gives the wedgie of doom to unsuspecting people who stand in her way--including principal-turned-superhero Captain Underpants.

Three short stories in the form of diary entries, plus interviews, puzzles, and games, reveal new insights into the world of Percy Jackson and the other heroes of Olympus.