Based on sales for the week ending September 22, 2013

16. The Language of Flowers
Vanessa Diffenbaugh, Ballantine, $15, 9780345525550

17. The Unlikely Pilgrimage of Harold Fry
Rachel Joyce, Random House, $15, 09780812983456

18. A Hologram for the King
Dave Eggers, Vintage, $15.95, 09780307947512

19. Orphan Train
Christina Baker Kline, Morrow, $14.99, 09780061950728

20. NW
Zadie Smith, Penguin, $16, 09780143123934

21. Joyland
Stephen King, Hard Case Crime, $12.95, 09781781162644

22. The Hit
David Baldacci, Grand Central, $15, 09781455521173

23. Winter of the World
Ken Follett, NAL, $25, 09780451419248

24. The Secret Keeper
Kate Morton, Washington Square Press, $16, 09781439152812

25. The Paris Wife
Paula McLain, Ballantine, $15, 09780345521316

26. Fifty Shades of Grey
E.L. James, Vintage, $15.95, 09780345803481

27. Sweet Tooth
Ian McEwan, Anchor, $15.95, 09780345803450

28. Tell the Wolves I'm Home
Carol Rifka Brunt, Dial, $15, 09780812982855

29. The Racketeer
John Grisham, Bantam, $16, 09780345545336

30. The Bartender's Tale
Ivan Doig, Riverhead, $16, 09781594631481

31. Defending Jacob
William Landay, Bantam, $15, 09780345533661

32. World War Z
Max Brooks, Broadway, $14.95, 09780770437411

33. The Yellow Birds
Kevin Powers, Back Bay, $14.99, 09780316219341

34. Insane City
Dave Barry, Berkley, $16, 09780425264720

35. The Art of Hearing Heartbeats
Jan-Philipp Sendker, Other Press, $14.95, 09781590514634

36. The Catcher in the Rye
J.D. Salinger, Back Bay, $13.99, 09780316769174

37. Fahrenheit 451
Ray Bradbury, S&S, $13.99, 09781451673319

38. Bring Up the Bodies
Hilary Mantel, Picador, $16, 09781250024176

39. A Hundred Flowers
Gail Tsukiyama, St. Martin's Griffin, $15.99, 09781250022547

40. The 100-Year-Old Man Who Climbed Out the Window and Disappeared
Jonas Jonasson, Hyperion, $15.99, 09781401324643

41. The Beautiful Mystery
Louise Penny, Minotaur, $15.99, 09781250031129

42. The Night Circus
Erin Morgenstern, Anchor, $15, 09780307744432

43. Rules of Civility
Amor Towles, Penguin, $16, 09780143121169

44. Fifty Shades Darker
E.L. James, Vintage, $15.95, 09780345803498

45. The Alchemist
Paulo Coelho, HarperOne, $14.99, 09780061122415

46. The Snow Child
Eowyn Ivey, Reagan Arthur/Back Bay Books, $14.99, 09780316175661

47. Wolf Hall
Hilary Mantel, Picador, $16, 09780312429980

48. The Chaperone
Laura Moriarty, Riverhead, $16, 09781594631436

49. The O. Henry Prize Stories 2013
Laura Furman (Ed.), Anchor, $15.95, 09780345803252

50. Ender's Game
Orson Scott Card, Tor, $9.99, 09780765337542