Hoping to feature Frank and Joe in his latest action-adventure novel, writer Oliver Richards sets off a series of events that bring the infamous Assassins back to town, and the Hardys fear that the Gray Man has turned traitor.
- ISBN10 0671882112
- ISBN13 9780671882112
- Publish Date 1 June 1995
- Publish Status Active
- Out of Print 5 October 2004
- Publish Country US
- Publisher Simon & Schuster
- Imprint Pocket Books
- Format Paperback (A-Format (178x111 mm))
- Pages 10
- Language English