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.
- ISBN10 0142422258
- ISBN13 9780142422250
- Publish Date 16 June 2015 (first published 15 May 2014)
- Publish Status Active
- Publish Country US
- Publisher Penguin Putnam Inc
- Imprint Penguin Young Readers
- Format Paperback (US Trade)
- Pages 32
- Language English
- URL https://penguinrandomhouse.com/books/isbn/9780142422250