One Dangerous Lady — Jane Stanton Hitchcock

THE HIGHER THE SOCIETY, THE LOWER THE FALL...

It is a truth universally acknowledged that a widow in possession of a good fortune must be in want of a husband. Being such a widow, I'm a little more skeptical Just as I'm skeptical of those who say that doing something once makes it easier to do a second time, such as skydiving or buying a couture dress. It is not true of murder. Believe me, I know.. .
Once the grandest of New York's grande dames, Jo Slater has made a miraculous comeback from social obscurity. Now at a lavish wedding in Barbados, she's enjoying the good life again...until a wealthy art collector disappears from his yacht. Before she can uncover whodunnit (or even what was done), Jo learns that a mysterious figure from her past seeks to destroy her for good. But in a battle of cunning manipulation among the Park Avenue set, Jo Slater is more deadly- than a tiger and she's out for blood.