The Hardy Boys stumble across a twisted technological plot creating perfect replicas of human beings and fight for the survival of a top secret government intelligence organization.
- ISBN10 0785750622
- ISBN13 9780785750628
- Publish Date 15 January 1991 (first published 1 January 1987)
- Publish Status Out of Stock
- Imprint Turtleback Books
- Edition Turtleback School & Library ed.
- Format Hardcover (Library Binding)
- Language English