I want to warn potential victims. Many of them are women, and many of them are battered women. It's a cause for me. When I look back, though, so many of the books I've written are about wives who just couldn't get away.
Being a doctor has taught me a lot about directing. You're doing the same thing: You're reconstructing the manifold of behavior to the point where an audience says, yes, that's exactly like people I know.