THE HUSBAND: A heart surgeon at the top of his field, Stephen Aston is getting married again. But first he must divorce his current wife, even though she can no longer speak for herself. THE DAUGHTERS: Tully and Rachel Aston look upon their father’s fiancÔee, Heather, as nothing but an interloper. Heather is younger than both of them. Clearly, she’s after their father’s money. THE FORMER WIFE: With their mother in a precarious position, Tully and Rachel are determined to get to the truth about their family’s secrets, the new wife closing in, and who their father really is. THE YOUNGER WIFE: Heather has secrets of her own. Will getting to the truth unleash the most dangerous impulses in all of them?