The marriage game - Fern Michaels

When Samantha Rainford, newly wed to Douglas Cosmo Rainford III, returns home from her honeymoon to find divorce papers waiting, she's shocked and heartbroken. Then she discovers that she's not the first to be abandoned, but is one of four (or maybe more) ex-Mrs Rainfords, and decides it's time to put into practice that old truism: Don't get mad, get even.

With the help of her longtime girlfriend Slick, a glamorous fashion model, Sam gathers together a highly unlikely team: Mrs Kayla Rainford, an architect who moonlights as an exotic dancer; Mrs Zoe Rainford, a plumber; and Mrs Olivia Rainford, a former cheerleader and cartoon artist. Sam and Slick flunked out of FBI training school, but they still learned a few things there, like how to plan a mission. And the fivesome is determined to do whatever it takes to bring down Douglas Rainford III.