This is about a book I read several years ago. I can't remember the author. It was a mystery set in the future, locale Britain. About a serial killer that got hold of the database of all people with the gene for a serial killer. Then he started killing all the people on the list with the serial killer gene. Anyone know the author?
It is not JD Robb. I don't like her, as she is a romance author at heart, and as such her JD Robb books have too much romance in them.

A Philosophical Investigation by Philip Kerr (http://www.amazon.com/Philosophical-Investigation-Philip-Kerr/dp/0452271401)