Jonathan Kellerman's psychological thrillers have been a fixture on the national bestseller charts since his first title, When the Bough Breaks, was published in 1985. His latest, Twisted, lands on the charts in the #11 slot with 300,000 copies in print after four trips to press. Last year's hardcover Kellerman bestseller, The Conspiracy Club, is now a mass market hit; it lands in the #6 spot. His publisher, Ballantine, reports 600,000 copies in print for the paperback.