Cornwell, Patricia. Point of origin. New York: G. P. Putnam's Sons, 1998. ISBN 0-399-14394-7.

Summary: The seemingly pointless destruction by arson of a rich man's country home turns out to be a ploy in a psychopath's campaign of reprisal against the medical examiner who sent her to prison. By collaborating with a variety of police and investigative forces, the medical examiner hunts down the psychopath, but not without suffering terrible personal harm.