They Saved Hitler's Brain

It seems Hitler's head is being kept alive on Mandoras, a tiny Caribbean island controlled by Nazis. "Mr. H" and his buddies are planning on spraying every major city with a deadly nerve gas, then take over the world. Only Professor John Coleman and his antidote stand in their way. When John is kidnapped, his son-in-law Phil, and daughter Kathy fly to his rescue. Mandoras is crawling with Germans, but luckily Phil is helped by the Chief of Police and His Excellency...