I have minor characters who are Asian-American, and I've been using them throughout my career, but they've never taken center stage, they've never been really powerful, they've never expressed some of the experiences I had growing up in the U.S. Johnny Tam is the first one.

My brother often complains to me about the 'angry Asian male' in the United States. As a female, I haven't encountered this, but Asian-American men are angry. They're angry because, for so many years, they've been neglected as sex symbols. Asian women have it much easier, I think; we're accepted into various circles.

Because I never plan anything out ahead of time, I'm always in the process of learning about my characters. Without a biographical sketch to guide me, I discover things about my heroines as the stories unfold. Only in 'Body Double' did I discover that Maura's mother was a serial killer.

My dad was Chinese-American and very conservative when it came to his family's futures. He said if I wanted to have a secure job, I should go into science. So I did what Dad said and went to medical school, but the writing bug never left me.