Even monster-battling princesses get tired sometimes! But a peaceful time away is hard to find in the fourth book of the New York Times best-selling series.

After battling monsters all night, a sleepy Princess in Black decides that she needs a vacation. After all, the Goat Avenger has offered to protect the goats while she's away. The very next day Princess Magnolia rides her bicycle to the seaside, where the air is salty, the

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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! This...

"The Princess in Black is ready for her snowy playdate with the Goat Avenger and the Princess in Blankets. It"s a perfect day to build snow monsters and battle them for practice. But just when they"re about to wage battle, a huge foot smashes their snow monster. "SQUASHY!" It's a giant, and it's smashing everything in its path! The giant is too strong for the three friends, so the Princess in Blankets has an idea: it's time to light the Sparkle Signal...

When a goo monster crashes the science fair, the Princess in Black is on the job, and with the help of the Princess in Blankets, sets out to save the science fair.

Rescuing a squirrel after an accident involving a vacuum cleaner, comic-reading cynic Flora Belle Buckman is astonished when the squirrel, Ulysses, demonstrates astonishing powers of strength and flight after being revived.

Twelve-year-old Diana's much-anticipated visit with her best friend, Princess Sakina, turns into an adventure as they face a booby-trapped island, a forbidden visitor, and a demon.

Equipped with a crucial clue discovered by June on her wild flight, Jack and the gang embark on an epic road trip to stop the villainous Thrull and his skeleton army.

Max's twin is public enemy number one, and it is up to the Midknights to avoid looming dangers like trolls and pirates to find her before time runs out.

During the first winter after the Monster Apocalypse, Jack and his buddies prepare for a monstrous Christmas celebration, but a supervillainess steals Jack's prized monster-slaying weapon, his Louisville Slicer, and he vows to get it back.

Surviving their first winter after the Monster Apocalypse was no easy feat, yet Jack and his buddies waste no time springing to action against some of the nastiest, most evil monsters around. When Jack discovers his Louisville Slicer has new, otherworldlypowers, he's thrown into epic training to find out what kind of destruction the blade can wield. But between fighting off zombies, fleeing from strange, glowy Vine-Thingies erupting from the ground,...