Based on sales for the week ending January 13, 2013

16. The Hobbit
J.R.R. Tolkien, Mariner, $13.95, 9780547928227

17. Home
Toni Morrison, Vintage, $14, 9780307740915

18. Fifty Shades Darker
E.L. James, Vintage, $15.95, 9780345803498

19. The Marriage Plot
Jeffrey Eugenides, Picador, $16, 9781250014764

20. Believing the Lie
Elizabeth George, NAL, $16, 9780451237699

21. The Lifeboat
Charlotte Rogan, Reagan Arthur, $14.99, 9780316185912

22. The Art of Fielding
Chad Harbach, Back Bay, $14.99, 9780316126670

23. The Art of Racing in the Rain
Garth Stein, Harper, $14.99, 9780061537967

24. The Buddha in the Attic
Julie Otsuka, Anchor, $13.95, 9780307744425

25. The Dressmaker
Kate Alcott, Anchor, $15, 9780307948199

26. The Tiger's Wife
Téa Obreht, Random House, $15, 9780385343848

27. Waiting for Sunrise
William Boyd, Harper Perennial, $15.99, 9780061876776

28. World War Z
Max Brooks, Three Rivers, $14.95, 9780307346612

29. How It All Began
Penelope Lively, Penguin, $16, 9780143122647

30. Billy Lynn's Long Halftime Walk
Ben Fountain, Ecco, $14.99, 9780060885618

31. The Brief Wondrous Life of Oscar Wao
Junot Diaz, Riverhead, $16, 9781594483295

32. The Best American Short Stories 2012
Tom Perrotta, Heidi Pitlor (Eds.), Mariner, $14.95, 9780547242101

33. The Shoemaker's Wife
Adriana Trigiani, Harper, $15.99, 9780061257100

34. The Art of Hearing Heartbeats
Jan-Philipp Sendker, Other Press, $14.95, 9781590514634

35. The Uninvited Guests
Sadie Jones, Harper Perennial, $14.99, 9780062116512

36. Sharp Objects
Gillian Flynn, Three Rivers, $14, 9780307341556

37. City of Dark Magic
Magnus Flyte, Penguin, $16, 9780143122685

38. Ready Player One
Ernest Cline, Broadway, $14, 9780307887443

39. Caleb's Crossing
Geraldine Brooks, Penguin, $16, 9780143121077

40. The Kitchen House
Kathleen Grissom, Touchstone, $16, 9781439153666

41. Dark Places
Gillian Flynn, Three Rivers, $14, 9780307341570

42. Carry the One
Carol Anshaw, S&S, $15, 9781451656930

43. A Discovery of Witches
Deborah Harkness, Penguin, $16, 9780143119685

44. Fahrenheit 451
Ray Bradbury, S&S, $11.99, 9781451673319

45. The Cat's Table
Michael Ondaatje, Vintage, $15, 9780307744418

46. Sacre Bleu
Christopher Moore, Morrow, $16.99, 9780061779756

47. A Visit From the Goon Squad
Jennifer Egan, Anchor, $14.95, 9780307477477

48. The Keeper of Lost Causes
Jussi Adler-Olsen, Plume, $16, 9780452297906

49. Cutting for Stone
Abraham Verghese, Vintage, $15.95, 9780375714368

50. The Innocent
David Baldacci, Grand Central, $14.99, 9781455519002