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Let's Monster Up!

Illustrated by Cyndi Marko

About The Book

How to Catch a Monster meets Mel Fell in this sweet and not-too-spooky picture book about a monster who must face his fears to help his friend look for her missing pet.

Seth the monster is supposed to be scary. Instead, he’s the one who’s scared…of almost everything. His family says he’ll grow out of it, but he’s not so sure. And when his best friend Ruthie’s turtle goes missing, Seth joins the search but worries he’ll be too frightened to be of any help.

The hunt for Flash the turtle takes them across a river, through dark woods, and into a haunted house. Seth still struggles with feeling afraid until he realizes Ruthie is worried, too! No longer alone in his fear, Seth may finally be able to find his courage and monster up for the sake of his friend.

About The Author

Photo courtesy of the author

Cyndi Marko is the author-illustrator of the award-winning Kung Pow Chicken early chapter book series, the graphic novel chapter books This Little Piggy: An Owner’s Manual and Boo! Hiss!, the middle grade graphic novel series Sloth Sleuth, and picture books Let’s Monster Up! and Gilly’s Monster Trap. She currently lives in Edmonton, Canada, with her quiet kids and noisy cats. Learn more at CyndiMarko.com.

About The Illustrator

Photo courtesy of the author

Cyndi Marko is the author-illustrator of the award-winning Kung Pow Chicken early chapter book series, the graphic novel chapter books This Little Piggy: An Owner’s Manual and Boo! Hiss!, the middle grade graphic novel series Sloth Sleuth, and picture books Let’s Monster Up! and Gilly’s Monster Trap. She currently lives in Edmonton, Canada, with her quiet kids and noisy cats. Learn more at CyndiMarko.com.

Why We Love It

“Two loveable monster friends, a quest to save a missing pet, and fun refrains—what more could you want in a picture book?”

—Catherine L., Senior Editor, on Let’s Monster Up!

Product Details

  • Publisher: Simon & Schuster/Paula Wiseman Books (March 4, 2025)
  • Length: 40 pages
  • ISBN13: 9781665938945
  • Ages: 4 - 8

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Raves and Reviews

"Readers will adore this warm, comical story reassuring them they can learn to overcome anxieties. Monstrously encouraging, entertaining fun."

Kirkus Reviews

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More books from this author: Cyndi Marko