Ethan tries to help his toddler sister find her own bedtime monster.

During a thunderstorm, the farm animals are frightened out of the barn by a monster, and only cow friends Minnie and Moo are brave enough to investigate.

The monstrous Turbo Toilet 2000 is determined to take revenge on George, Harold, and Captain Underpants.

Mr. and Mrs. Frank N. Stein love their son very much, but despite their best efforts and his, it seems he will never look or act as scary as a Stein should.

Convinced that if she looks like a monster on the outside (a blood tumor covers half of her face), she must be a monster on the inside as well, Sophie tries to find a cure before her mother finds out the truth.--

Bella Legrossi and Boris Kleanitoff, the messiest and cleanest monsters in Booville respectively, do nothing but argue until the night of Harry Beastie's Halloween party.

Lucy has told so many monster tales that when whe discovers a real live monster, the librarian in charge of the summer reading program, no one believes a word she says.

A young monster says goodnight to all of the other monsters in his bedroom.

Twelve-year-old Alexa and her companions unwittingly lead Abaddon, now in theform of an enormous, horrible sea monster, to the secret community known as the Five Stone Pillars when they go to bring the people living there home.

Ned Roach becomes a bogler's apprentice as Victorian London seeks to banish its bogle infestation once and for all in this conclusion to the trilogy featuring young assistants to Victorian London's best monster catcher, Alfred Bunce.