It’s mayhem at the science fair! A squishy goo monster is a challenge for the Princess in Black — but luckily some science-loving princesses are on hand to help. Princess Magnolia is excited. Excited and nervous. She’s going to the Interkingdom Science Fair today to present her poster about seeds and plants, and when she arrives, she sees that her friends are there too! Princess Honeysuckle made a mole habitat, Princess Sneezewort has built a blanket fort, and Tommy Wigtower has a talking volcano that’s saying “EAAAAT!” Wait, what? A surprise goo monster makes this a job for the Princess in Black, and the Princess in Blankets is on the scene to lend a hand. But will two masked heroes be enough to save the science fair? A little scientific problem-solving — and a lot of princess power — will make the sixth entry in the New York Timesbest-selling series a smash hit.

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! But then a shout from outside Princess Sneezewort's castle interrupts their fun. It’s a monster! This is a job for the Princess in Black. Yet when the Princess in Black gets there, she finds only a masked stranger and no monster in sight. But all is not as it seems! Action and humor abound in this ode to friendship that proves that when shape-shifting monsters intrude on your plans, two heroes are better than one.

It’s a case of monstrous cuteness in the third book of the New York Times best-selling series as the Princess in Black encounters a new challenge: a field overrun by adorable bunnies. Princess Magnolia and her unicorn, Frimplepants, are on their way to have brunch with Princess Sneezewort when Princess Magnolia’s glitter-stone ring rings. The monster alarm! After a quick change in the secret cave, Princess Magnolia and Frimplepants are transformed into the Princess in Black and her faithful pony, Blacky. But when they get to the goat pasture, all they can see is a field full of darling little bunnies. Where are the monsters? Are these bunnies as innocent as they appear?

Something smells like trouble! Can five princess heroes and one Goat Avenger pool their talents to vanquish a monstrous stink? The Princess in Black is in a very stinky situation. A foul cloud is plaguing the goat pasture, and it smells worse than a pile of dirty diapers or a trash can on a hot summer day. But every time the Princess in Black and her friend the Goat Avenger manage to get rid of the odor, they accidentally blow it to another kingdom! Other masked heroes and their trusty companions show up to help, but how do you battle a stench when your ninja moves fail? Fans with a nose for slapstick will be tickled to see the six stalwart friends join their wits to take on an impossibly beastly stink.

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 sun is shiny, and the sea is as blue as monster fur. But just as Princess Magnolia is about to take a nap on her hammock, she hears a “ROAR!” Could a sea monster ruin this vacation for the Princess in Black?

When a mermaid princess needs help protecting her adorable sea goats from being eaten by a greedy kraken, the Princess in Black and her friends come to her rescue, working together to take down the big blue monster.

Who says princesses don’t wear black? When trouble raises its blue monster head, Princess Magnolia ditches her flouncy dresses and becomes the Princess in Black! Princess Magnolia is having hot chocolate and scones with Duchess Wigtower when . . . Brring! Brring! The monster alarm! A big blue monster is threatening the goats! Stopping monsters is no job for dainty Princess Magnolia. But luckily Princess Magnolia has a secret —she’s also the Princess in Black, and stopping monsters is the perfect job for her! Can the princess sneak away, transform into her alter ego, and defeat the monster before the nosy duchess discovers her secret? From award-winning writing team of Shannon and Dean Hale and illustrator LeUyen Pham, here is the first in a humorous and action-packed chapter book series for young readers who like their princesses not only prim and perfect, but also dressed in black.

A squishy goo monster is a challenge for the Princess in Black--but luckily some science-loving princesses are on hand to help. But will they be enough to save the science fair?

It's mayhem at the science fair! A squishy goo monster is a challenge for the Princess in Black, but luckily some science-loving princesses are on hand to help. But will two masked heroes be enough to save the science fair?

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.