Kill Me — Stephen White

He's fabulously wealthy and lives life to the fullest--enjoying fast, expensive cars, the love of his beautiful wife, and adventures in every corner of the globe. When a friend is stricken by a terrible illness, he realizes his only fear is to be diminished by disease. That's when he meets the Death Angels, who promise to end his life should he ever face such a fate. The only hitch is that the contract is irrevocable. And once he signs it, he discovers he has one more all-important task to carry out before it's executed....