1. Go Set a Watchman, by Harper Lee, Harper
2. All the Light We Cannot See, by Anthony Doerr, Scribner
3. The Girl on the Train, by Paula Hawkins, Riverhead
4. The Nature of the Beast, by Louise Penny, Minotaur – Debut
5. X, Sue Grafton, Marian Wood Books/Putnam – Debut
6. Circling the Sun, by Paula McLain, Ballantine
7. Secondhand Souls, by Christopher Moore, Morrow – Debut
8. The Nightingale, by Kristin Hannah, St. Martin's
9. The Little Paris Bookshop, by Nina George, Crown
10. Wind/Pinball, by Haruki Murakami, Knopf
11. Kitchens of the Great Midwest, by J.Ryan Stradal, Pamela Dorman Books
12. The Marriage of Opposites, by Alice Hoffman, S&S
13. Last Bus to Wisdom, by Ivan Doig, Riverhead
14. The Taming of the Queen, by Philippa Gregory, Touchstone Debut
15. Who Do You Love, by Jennifer Weiner, Atria
*Published Thursday, September 3, 2015 (for the sales week ended Sunday, August 30, 2015). Based on reporting from many hundreds of independent bookstores across the United States. For information on more titles, please visit IndieBound.org