Life holds few surprises for Bennie Rosato, head of her own Philadelphia law firm. As a criminal attorney now specializing in police misconduct cases, she's seen the noblest and most deviant aspects of human nature. But nothing can prepare her for the moment she enters a maximum-security prison to meet her new client, Alice Connolly, face to face.

Accused of brutally murdering her lover, a highly decorated police detective, Connolly claims the police framed her. A defendant protesting her innocence is not unusual for Bennie. What shocks her is that Connelly bears an uncanny physical resemblance to her. "Pleased to meet you. I'm your twin. Your identical twin," Connolly tells the astonished lawyer. But Bennie grew up as an only child, or so she thought. She has a law firm, a handsome young lover, and a golden retriever; she doesn't have a twin. Or does she?

Connolly knows too many intimate details about Bennie's life and family for the resemblance to be just coincidental. And there is something about the woman that compels the intrigued attorney to defend her, against her better judgment. Taking the case with the trial only a week away, Bennie plunges into the mystery of the murder, as well as her own identity and her family's dark secrets. Is Connolly innocent? And is she Bennie's unknown sister? It is not until Bennie takes the case to verdict that she will finally learn the truth, which threatens to change her life.