Reviews
“Gray Matter is one of those rare and stunning thrillers that not only made my pulse race, it also challenged my firmly held beliefs about human intelligence. This is a thought-provoking and controversial novel that will chill you to the bone.” —Tess Gerritsen, author of The Apprentice
“Packs the emotional wallop and tension of a Stephen King novel with the cutting edge science and engrossing pace of Robin Cook or Michael Crichton. Riveting from page one!” —Robert B. Parker