Mysterious Things

From the creators of the New York Times bestseller Invisible Things, this entertaining exploration of invisible mysteries is a mind-tickling, STEM-friendly invitation to explore the unseen world.

The universe is full of Mysterious Things--lost things, forgotten things, things we don't know, and even things we don't know we don't know! In fact, you might say the world contains more questions than answers! Questions like:

• What do dreams mean?
• What is at the bottom of the ocean?
• Where is that lost puzzle piece?

If you're ready to begin unravelling these mysteries and more, grab your detective's hat or slip into your lab coat and come along on an exciting journey to embrace the unknown.

INSPIRATIONAL FUN: Learning about some of the universe's mysteries--like dreams, heebie-jeebies, dark matter, curiosity, rumors, and so much more--will inspire kids to dream big and explore a world full of untapped possibilities, showing that not everything has been discovered yet.

LIFELONG LEARNING: This vibrant book introduces the idea that there's so much we don't know, turning curiosity and problem-solving into a lifelong adventure and fostering a growth mindset.

STEM THEMES: Packed with engaging content and visuals, Mysterious Things will spark curiosity about science, technology, engineering, and math in a fun way.

PRAISE FOR INVISIBLE THINGS: "Invisible Things is as interactive as you want it to be. Along the way, there are seek-and-finds, mindfulness exercises, and discussion topics, but it also works well as a straight-ahead read-aloud. The experience is somehow simultaneously contemplative and exuberant. It's a winning, wholly original book." ―The New York Times

GREAT GIFT: Pair with any of the books in Andy J. Pizza and Sophie Miller's bestselling series, including Invisible Things, Get the Giggles, and Feel Calm, to create an outstanding present for young learners.

Perfect for:

• A distinctive gift to encourage curiosity and wonder in kids
• Teachers, educators, and librarians seeking classroom books with STEM content
• Anyone interested in entertaining ways to explore our world with kids
• Parents, grandparents, and caregivers seeking engaging and artful nonfiction picture books
• Fans of Andy J. Pizza, the Creative Pep Talk podcast, or his many books, including the viral internet hit Invisible Things

Author: Andy J. Pizza,Sophie Miller
Publisher: Chronicle Books
Published: 07/14/2026
Pages: 52
Binding Type: Hardcover
Weight: 1.05lbs
Size: 11.10h x 9.30w x 0.70d
ISBN: 9781797239880
Audience: Ages 4-8


Review Citation(s):
School Library Journal 12/01/2025 pg. 63
Kirkus Reviews 05/01/2026
Booklist 07/01/2026

About the Author
Andy J. Pizza is the New York Times-bestselling coauthor of Invisible Things, the talent behind the popular podcast Creative Pep Talk, and the illustrator of several books, including A Pizza with Everything on It and A Sundae with Everything on It. Learn more at andyjpizza.com.

Sophie Miller is the New York Times-bestselling coauthor of Invisible Things and a mixed-media artist originally from Yorkshire, England. She likes to write, walk, garden, and visit the library with her kids. Learn more at sophiemiller.co.

Andy loves the mysteries of the human brain and learning about the universe. Sophie loves reading mystery books and looking for nature's clues. They live in Columbus, Ohio, along with their three curious kids and two dogs.