Memories of Midnight by Sidney Sheldon

Though a totally separate novel it does continue the saga begun in "The Other Side of Midnight" Catherine Douglas has survived the attempt on her life and is living secretly in a remote convent in Greece Her mind, however, is dangerously torn between embracing the past and shutting it out Constantin Demiris billionaire Greek shipowner, art collector, womanizer, and murderer is a man still obsessed with revenge Demiris has already brought a chilling retribution upon Noelle Paige, the woman who betrayed him, and Larry Douglas, the man who stole her away Now, in Memories of Midnight, Demiris plots his final act of vengeance