If Tomorrow Comes — Sidney Sheldon

Tracy Whitney is on top of the world. Young, beautiful, intelligent, she is about to marry into wealth and glamour - until, betrayed by her own innocence, she finds herself in prison, framed by a ruthless mafia gang, abandoned by the man she loves.
Beaten and broken, but surviving with dazzling ingenuity, Tracy emerges from her savage ordeal - determined to avenge herself on those who have destroyed her life... From New Orleans to London, Paris, Madrid and Amsterdam, Tracy plays for the highest stakes in a deadly game...
Only one man can challenge her; he's handsome, persuasive and every bit as daring. And only one man can stop her; an evil genius whose only hope of salvation is in Tracy's destruction...