Cam, her best friend Eric, and Eric’s mom are spending the day with Eric’s grandparents. But Grandpa and Grandma seem too tired to visit. Every so often, a knock at the door wakes them up. But when they go to answer, no one is there. Is a Knock, Knock Ghost on the loose? It’s up to Cam to solve the mystery!

Garden State Children’s Book Award 2017 Nominee.
© V & P Studios
David A. Adler is the author of more than 200 books, ranging from children's series to books on math, science, and economics. His work includes the Young Cam Jansen series, the Andy Russell series, and a number of nonfiction and picture biography titles. He lives in Woodmere, New York. View titles by David A. Adler
Susanna Natti is an illustrator for young readers. The books she has illustrated include The Almost Awful Play and the Cam Jansen series of books. She lives in Bedford, Massachusetts. View titles by Susanna Natti
PRAISE FOR YOUNG CAM JANSEN AND THE KNOCK-KNOCK MYSTERY:

"The stories in the this series promote logical thinking and helpfulness for young readers beginning to enjoy simple transitional chapter books." —School Library Journal 

About

Cam, her best friend Eric, and Eric’s mom are spending the day with Eric’s grandparents. But Grandpa and Grandma seem too tired to visit. Every so often, a knock at the door wakes them up. But when they go to answer, no one is there. Is a Knock, Knock Ghost on the loose? It’s up to Cam to solve the mystery!

Garden State Children’s Book Award 2017 Nominee.

Author

© V & P Studios
David A. Adler is the author of more than 200 books, ranging from children's series to books on math, science, and economics. His work includes the Young Cam Jansen series, the Andy Russell series, and a number of nonfiction and picture biography titles. He lives in Woodmere, New York. View titles by David A. Adler
Susanna Natti is an illustrator for young readers. The books she has illustrated include The Almost Awful Play and the Cam Jansen series of books. She lives in Bedford, Massachusetts. View titles by Susanna Natti

Praise

PRAISE FOR YOUNG CAM JANSEN AND THE KNOCK-KNOCK MYSTERY:

"The stories in the this series promote logical thinking and helpfulness for young readers beginning to enjoy simple transitional chapter books." —School Library Journal 

2024 Elementary School Collection

The Penguin Random House Education Elementary School Collection features outstanding fiction, nonfiction, and picture books from Penguin Young Reader’s, Random House Children’s, DK, and Grupo Editorial, as well as children’s publishers distributed by Penguin Random House. Explore online or download this valuable resource to discover great books in specific topic areas such as: Leveled Readers,

Read more

DK Learning Phonic Books Sampler Request

Thank you for your interest in DK Learning | Phonic Books. To download the DK Learning | Phonic Books sampler with four complete readers, please click here and complete the form. Once your information is successfully submitted, a link to download the sampler will be provided on the confirmation screen.   Click here to learn

Read more

PRH Education Translanguaging Collections

Translanguaging is a communicative practice of bilinguals and multilinguals, that is, it is a practice whereby bilinguals and multilinguals use their entire linguistic repertoire to communicate and make meaning (García, 2009; García, Ibarra Johnson, & Seltzer, 2017)   It is through that lens that we have partnered with teacher educators and bilingual education experts, Drs.

Read more

PRH Education Classroom Libraries

“Books are a students’ passport to entering and actively participating in a global society with the empathy, compassion, and knowledge it takes to become the problem solvers the world needs.” –Laura Robb   Research shows that reading and literacy directly impacts students’ academic success and personal growth. To help promote the importance of daily independent

Read more