Today, Ronnie is a renowned scientist living in Chicago. But when she was a teenager, she had a run-in with a famous Hollywood producer in Acapulco, Mexico. He attempted to sexually assault her-and she killed him. Having served time in prison, Ronnie finally put this episode behind her . . . until now. Just when she has a real shot at the Nobel Prize, a ruthless blackmailer is threatening to expose the secrets of her past. Can Claire help to preserve Ronnie's reputation and keep her out of harm's way? That will depend on Claire's investigation-and what really happened on the night of the murder so many years ago . . .