Based on sales at independent bookstores nationwide for the eight-week period ending January 9, 2011.

1. Moonlight Mile
Dennis Lehane, Morrow, $26.99, 9780061836923

2. U Is for Undertow
Sue Grafton, Berkley, $7.99, 9780425238110

3. 61 Hours
Lee Child, Dell, $9.99, 9780440243694

4. Worth Dying For
Lee Child, Delacorte, $28, 9780385344319

5. The Sweetness at the Bottom of the Pie
Alan Bradley, Bantam, $15, 9780385343497

6. The Best American Mystery Stories 2010
Lee Child (Ed.), Mariner, $14.95, 9780547237466

7. Djibouti
Elmore Leonard, Morrow, $26.99, 9780061735172

8. Killing Floor
Lee Child, Jove, $9.99, 9780515141429

9. Willful Behavior
Donna Leon, Penguin, $14, 9780143117582

10. The Track of Sand
Andrea Camilleri, Penguin, $14, 9780143117933

11. The Charming Quirks of Others
Alexander McCall Smith, Pantheon, $24.95, 9780307379177

12. Dog on It
Spencer Quinn, Atria, $15, 9781416585848

13. The Professional
Robert B. Parker, Berkley, $9.99, 9780425236307

14. Maisie Dobbs
Jacqueline Winspear, Penguin, $15, 9780142004333

15. Faceless Killers
Henning Mankell, Vintage, $14.95, 9781400031573

16. Painted Ladies
Robert B. Parker, Putnam, $26.95, 9780399156854

17. The Fat Man
Ken Harmon, Dutton, $19.95, 9780525951957

18. The Private Patient
P.D. James, Vintage, $15, 9780307455284

19. The Last Child
John Hart, Minotaur, $14.99, 9780312642365

20. The Lost Art of Gratitude
Alexander McCall Smith, Anchor, $14, 9780307387080

21. Thereby Hangs a Tail
Spencer Quinn, Atria, $15, 9781416585862

22. The Lace Reader
Brunonia Barry, Harper, $14.99, 9780061624773

23. Wicked Appetite
Janet Evanovich, St. Martin’s, $27.99, 9780312652913

24. Gone Tomorrow
Lee Child, Dell, $9.99, 9780440243687

25. The No. 1 Ladies’ Detective Agency
Alexander McCall Smith, Anchor, $14, 9781400034772