Skin Tight by Carl Hiaasen

In his attempt to lead a quiet life, ex-investigator Mick Stranaham doesn't expect to have a Mafia hit-man come knocking on his door. He disposes of him promptly with a stuffed marlin head. On closer inspection he notices that the man has recently undergone plastic surgery.

In language of great simplicity and power, Hemingway tells the story of an old Cuban fisherman, down on his luck--he hasn't caught a fish in 84 days--who goes out in his small skiff one more time. This time he hooks a huge marlin. During his relentless ordeal, a long and agonizing battle with the marlin far out in the Gulf Stream, the old man faces long days of hunger and exhaustion, his courage and his respect for his adversary never flagging. The man is old and tired and at the end of his life, but he remains the archetypical Hemingway hero who refuses to accept defeat.