Ursula Vernon

"It is Princess Harriet Hamsterbone to the rescue when Heady the hydra's egg is stolen, but her search leads her to a castle accessible only by a rat with a very long tail"--

Danny Dragonbreath and his friend Wendell get an up-close underwater tour of the Sargasso Sea from Danny's sea-serpent cousin, encountering giant squid and mako sharks--and learn about standing up to bullies in the process.

Not only must Danny and Wendell trick-or-treat with skeptical classmate Christiana, school bully Big Eddy dares them to enter a haunted house on Halloween night, where they may have to sacrifice their candy to a ghost.

A little girl in a red cape asks for Princess Harriet Hamsterbone's help with a pack of weasel-wolves who want to eat her grandmother, but after meeting everyone, Harriet is not sure who to trust.--

"When Princess Harriet climbs an enormous beantalk, she finds an even bigger surprise--a giant rabbit is keeping a goose and a girl who is half-harp-half-hamster are prisoner, and it's up to Harriet to save the day"--

When little twelve-year-old Molly arrives at Castle Hangnail to fill the vacancy for a wicked witch, the minions who dwell there have no choice but to give her the job, and at first it seems she'll be able to keep the castle open, but Molly has quite a few secrets that could cause trouble.