Island of Gold — James Grant

At the end of the Second World War a team of American and German military personnel, and a few German civilians, removed several million pounds worth of gold bullion from the German Federal Reserve vaults. The gold, however, was lost, and there was a cleverly constructed plan to find and reclaim it... Stanway has attempted suicide, but when he finds himself forced into a search for the gold, he gains the desire to live again and, at the same time, learns how to kill...