It's nearing the end of WWII, and Michael Harsh has been working for the government on a secret project for years. Finally he is ready to hand over the formula. But the next morning he is dead. It looks like suicide. Only Miss Silver knows it's murder.
- ISBN10 0340027150
- ISBN13 9780340027158
- Publish Date 1 September 1989
- Publish Status Transferred
- Out of Print 10 May 2000
- Publish Country GB
- Imprint Coronet Books
- Edition New edition
- Format Paperback
- Pages 192
- Language English