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Meet the Author: Patricia Cornwell

24 November 2011 Last updated at 18:32 GMT

In this week's Meet the Author, Patricia Cornwell's speaks to the BBC about her new book Red Mist.

It has been more than 20 years since Cornwell introduced her creation, Dr Kay Scarpetta.

Cornwell told Nick Higham how she reinvents her main character for new adventures.