Proportion is the heart of beauty.

She was dressed in white, and her tunic had amazing flared sleeves which trailed on the ground behind her as she glided down the stairs. Her hair was a mass of dark curls tumbling around her face, and she had dark, dark eyes. Jack realized that this was what the chansons meant when they referred to a beautiful princess in a castle. No wonder the knights all wept when the princess died.

I'm a great planner, so before I ever write chapter 1, I work out what happens in every chapter and who the characters are. I usually spend a year on the outline.

For success, the author must make the reader care about the destiny of the principals, and sustain this anxiety, or suspense, for about 100,000 words.

The research is the easiest. The outline is the most fun. The first draft is the hardest, because every word of the outline has to be fleshed out. The rewrite is very satisfying.

Thrillers have been traditionally very masculine books; the women characters often rather decorative.