Now that Kaz can finally pass through walls without feeling all "skizzy," he can go explore Beckett's secret room at the back of the library. What he finds there is a mystery he never expected!
| ISBN: | 9780448483320 |
| Publication date: | 11th August 2015 |
| Author: | Dori Hillestad Butler |
| Illustrator: | Aurore Damant |
| Publisher: | Grosset & Dunlap an imprint of Penguin Young Readers Group |
| Format: | Paperback |
| Pagination: | 128 pages |
| Series: | The Haunted Library |