Three friends form a codebreaking service and meet a motley cast of characters including a Bulgarian spy, a man from the State Department, and a little old lady who wants her diary encoded.
- ISBN10 038075228X
- ISBN13 9780380752287
- Publish Date 1 May 1987
- Publish Status Out of Print
- Out of Print 3 March 2016
- Publish Country US
- Imprint Avon Books
- Format Paperback (US Trade)
- Pages 104
- Language English