Field Gray made the Maclean's list of bestselling fiction in Canada for the third consecutive week, moving up to number 7 from number 9. Alas it was only on the NY Times best sellers extended list for one week. Philip Kerr's other appearance on the Times list came courtesy of his young adult book The Akhenaten Adventure in 2004.
And speaking of best sellers, In the Garden of Beasts, a story about the American ambassador to Germany William Dodd and his daughter Martha and their time in 1933/1934 Berlin, has hit the NY Times Best Sellers list at number 4. (His 2003 book The Devil in the White City spent 182 weeks on the hardcover/softcover lists.) We can't help thinking Philip Kerr's syndicated review for the Washington Post must have contributed to this early success: http://www.washingtonpost.com/entertainment/books/erik-larsons-in-the-garden-of-beasts/2011/04/05/AFwbUr2G_allComments.html?ctab=all_&#comments
By the way there is an interesting discussion of PK's review in the comments section at the end it.