Cruel Venus By Lewis Susan 2009
Allyson Jaymes has it all - celebrity, power, and a glamorous marriage. Until her world is destroyed by the bitterest betrayal of all: her husband's explosive affair with her 19-year-old assistant, Tessa Dukes. Tessa's ambitions burn fiercely. Her chilling manipulation of fame and her steady destruction of so many dreams and ambitions lead all concerned into a fatal minefield of sexual obsession, psychotic jealousy and deadly treachery.