"When his best friend Doug discovers his top-secret hideout, Harry enlists his friends' help to save it from being developed into an apartment building"--
- ISBN13 9780451473295
- Publish Date 6 October 2015
- Publish Status Remaindered
- Out of Print 9 August 2023
- Publish Country US
- Publisher Penguin Putnam Inc
- Imprint New American Library
- Format Hardcover
- Pages 80
- Language English