Frank and Joe go to Germany to assist the archaeologist Dr John Maxwell in his search for a legendary jewel-encrusted shield. The boys discover that the shield is missing, but more than that, so is Maxwell.
- ISBN10 0671561197
- ISBN13 9780671561192
- Publish Date 1 January 1997
- Publish Status Out of Stock
- Out of Print 1 December 2001
- Publish Country US
- Publisher Simon & Schuster
- Imprint Pocket Books
- Format Paperback (A-Format (178x111 mm))
- Pages 160
- Language English