Contentious college student Sarah Markham has hired Sunny to delve into her family background, a task that proves daunting for the feisty detective, who soon finds that facts about Sarah's parents are surprisingly difficult and dangerous to pin down. Meanwhile, Sunny's life is complicated by the fact that she's facing a genuine personal crisis of her own. As her ex-husband -- a man she loved but couldn't live with -- makes plans to remarry, she can no longer deny her disastrously mixed feelings about relationships. But, even as she decides to confront her own chaotic emotions through therapy and personal experimentation, the passionate P.I. puts her life on the line to answer troubled Sarah's questions about where and how family and identity intersect⁵and who is willing to kill to conceal the truth.