The Last Flight of the Blue Goose - Caisson Canada, #1

In 1942 the Blue Goose, a B-24 bomber, disappeared during a routine test flight from an airbase in Florida. After an intensive search, no trace of the plane or crew was ever found. Thirty years later, the copilot's remains were discovered on a remote beach in northern Brazil. Through happenstance the pilot's son, an engineer at Cape Kennedy, learns of the discovery. As the Apollo program is coming to an end, he decides to investigate his father's disappearance.
He locates his father's former commanding officer and together they mount an expedition to Brazil. In Brazil they find a Luger pistol that leads them to a Luftwaffe pilot who flew with the Condor Legion during the Spanish Civil War. The pilot refuses to cooperate and the investigation reaches a dead end. In 1977 the former Luftwaffe pilot dies in a crash at Tenerife and a bizarre Nazi plot is uncovered.