Based on sales for the week ending December 18, 2011

16. Red Mist
Patricia Cornwell, Putnam, $27.95, 9780399158025

17. The Scottish Prisoner
Diana Gabaldon, Delacorte, $28, 9780385337519

18. The Best of Me
Nicholas Sparks, Grand Central, $25.99, 9780446547659

19. Locked On
Tom Clancy, Mark Greaney, Putnam, $28.95, 9780399157318

20. Out of Oz
Gregory Maguire, Morrow, $26.99, 9780060548940

21. Rules of Civility
Amor Towles, Viking, $26.95, 9780670022694

22. Explosive Eighteen
Janet Evanovich, Bantam, $28, 9780345527714

23. A Dance With Dragons
George R.R. Martin, Bantam, $35, 9780553801477

24. The Girl Who Kicked the Hornet's Nest
Stieg Larsson, Knopf, $27.95, 9780307269997

25. The Dovekeepers
Alice Hoffman, Scribner, $27.99, 9781451617474

26. Kill Alex Cross
James Patterson, Little Brown, $28.99, 9780316198738

27. Micro
Michael Crichton, Richard Preston, Harper, $28.99, 9780060873028

28. Zero Day
David Baldacci, Grand Central, $27.99, 9780446573016

29. Caleb's Crossing
Geraldine Brooks, Viking, $26.95, 9780670021048

30. Salvage the Bones
Jesmyn Ward, Bloomsbury, $24, 9781608195220

31. The Buddha in the Attic
Julie Otsuka, Knopf, $22, 9780307700001

32. Damned
Chuck Palahniuk, Doubleday, $24.95, 9780385533027

33. The House of Silk
Anthony Horowitz, Mulholland, $27.99, 9780316196994

34. The Conference of the Birds
Peter Sis, Penguin Press, $27.95, 9781594203060

35. The Language of Flowers
Vanessa Diffenbaugh, Ballantine, $25, 9780345525543

36. Reamde
Neal Stephenson, Morrow, $35, 9780061977961

37. The Affair
Lee Child, Delacorte, $28, 9780385344326

38. The Sisters
Nancy Jensen, St. Martin's, $24.99, 9780312542702

39. The Angel Esmeralda: Nine Stories
Don DeLillo, Scribner, $24, 9781451655841

40. The Forgotten Affairs of Youth
Alexander McCall Smith, Pantheon, $24.95, 9780307379184

41. Nightwoods
Charles Frazier, Random House, $26, 9781400067091

42. The Time in Between
Maria Duenas, Atria, $26, 9781451616880

43. I Am Half-Sick of Shadows
Alan Bradley, Delacorte, $23, 9780385344012

44. Habibi
Craig Thompson, Pantheon, $35, 9780375424144

45. The Penguin Anthology of Twentieth-Century American Poetry
Rita Dove (Ed.), Penguin, $40, 9780143106432

46. Train Dreams
Denis Johnson, FSG, $18, 9780374281144

47. The Christmas Wedding
James Patterson, Richard DiLallo, Little Brown, $25.99, 9780316097390

48. Queen of America
Luis Alberto Urrea, Little Brown, $25.99, 9780316154864

49. Cat Stories
Diana Secker Tesdell (Ed.), Everyman's Library, $15, 9780307700896

50. The Snow Angel
Glenn Beck, Threshold Editions, $21, 9781439187203