Book 3 in the Gage Finley series of underwater action adventures.
The job for Gage Finley is to explore a German U-boat but when work leaked out of a WWII fortune buried there, Finley and team becomes the target of a terrorist organization. Making things worse is the fact that some of those in his own government are less than honorable. And then word of secret documents concerning that War are said to be buried there as well.