Paul Bowles 
Up Above the World [EPUB ebook] 

A chance encounter while holidaying in Central America leads an American couple, the Slades, to befriend the charming, handsome Grove Soto and his young Cuban mistress. But as the Slades‘ trip becomes prolonged and they grow increasingly dependent on their new acquaintances, an undercurrent of cruelty begins to disturb the comfort and niceties to which they are accustomed. Up Above the World shows Paul Bowles to be a master of the tension and horror of rising viciousness.