Book 5 in The Young Underground series. In their search for missing Nazi treasure, Peter, Elise, and Henrik find themselves trapped at sea on a Nazi submarine.
- ISBN10 1556616589
- ISBN13 9781556616587
- Publish Date 1 February 1996
- Publish Status Out of Print
- Out of Print 22 May 2009
- Publish Country US
- Publisher Baker Publishing Group
- Imprint Bethany House Publishers, a division of Baker Publishing Group
- Format Paperback
- Pages 187
- Language English