Le canard en fer blanc (1967)

In South America, airplane pilot François Cartier is searching for treasure for a group of political exiles who helped him escape the death penalty. But the members of the group are being murdered one by one. Having managed to get his hands on the loot, François will use it to exchange it for a beautiful revolutionary with whom he has fallen in love. But the return flight proves particularly perilous.

Unfortunately the movie Le canard en fer blanc is not yet available on HBO Max.