A quartet of international crooks -- Peterson, O'Hara, Ross and Ravello -- is stranded in Italy while their steamer is being repaired. With them are the Dannreuthers. The six are headed for Africa, presumably to sell vacuum cleaners but actually to buy land supposedly loaded with uranium. They are joined by others who apparently have similar designs. A quartet of international crooks -- Peterson, O'Hara, Ross and Ravello -- is stranded in Italy while their steamer is being repaired. With them are the Dannreuthers. The six are headed for Africa, presumably to sell vacuum cleaners but actually to buy land supposedly loaded with uranium. They are joined by others who apparently have similar designs. Parental Guide