# Young Cam Jansen and the Knock, Knock Mystery

Canonical: https://www.bookquiver.com/david-a-adler/young-cam-jansen-and-the-knock-knock-mystery/9780142422250

![Young Cam Jansen and the Knock, Knock Mystery](https://quivercdn.com/covers/penguin-young-readers/david-a-adler/young-cam-jansen-and-the-knock-knock-mystery_978-01-4242-225-0.jpg?v=2026-06-12%2013%3A34%3A06)

- Book: [Young Cam Jansen and the Knock, Knock Mystery](https://www.bookquiver.com/david-a-adler/young-cam-jansen-and-the-knock-knock-mystery) ([Young Cam Jansen and the Knock, Knock Mystery.md](https://www.bookquiver.com/david-a-adler/young-cam-jansen-and-the-knock-knock-mystery.md))
- Authors: [David A. Adler](https://www.bookquiver.com/david-a-adler), [Susanna Natti](https://www.bookquiver.com/susanna-natti)
- Publisher: penguin_young_readers
- ISBN: 978-01-4242-225-0
- Pages: 32
- Published: 2015-06-16
- Language: en_US
- Binding: Softcover

## Description

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....