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 006097446X
- ISBN13 9780060974466
- Publish Date 1 April 1992 (first published 1 September 1989)
- Publish Status Out of Print
- Out of Print 4 May 2011
- Publish Country US
- Publisher HarperCollins Publishers Inc
- Imprint HarperPerennial
- Format Paperback
- Pages 236
- Language English