To mark the paperback publication of my Caravaggio novel A NAME IN BLOOD, I'm posting each of the paintings that appear in the book each day for the next month. This is Saint Catherine. It's part of the collection at the Thyssen-Bornemisza Museum in Madrid. I was at the Thyssen some years ago and this image seduced me to the extent that I just had to write the novel. In A NAME IN BLOOD, Caravaggio stands before "St. Catherine," thinking about the whore he used as a model (who also features in the novel): "She strokes that rapier like it was the stiff member of a high-paying client."