A mysterious envelope, mistakenly placed in his motel pool locker, launches amazing boy detective Piet Potter on a chase across Manhattan which ends at the United Nations.
- ISBN10 0070510296
- ISBN13 9780070510296
- Publish Date 1 January 1982
- Publish Status Active
- Publish Country US
- Imprint McGraw-Hill Companies
- Format Hardcover
- Pages 47
- Language English