Based on sales for the week ending April 28, 2013

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

17. Life of Pi
Yann Martel, Mariner, $15.95, 9780547848419

18. Death Comes to Pemberley
P.D. James, Vintage, $15, 9780307950659

19. The Prisoner of Heaven
Carlos Ruiz Zaføn, Harper Perennial, $14.99, 9780062206299

20. The Perks of Being a Wallflower
Stephen Chbosky, MTV Books, $14, 9781451696196

21. The Night Circus
Erin Morgenstern, Anchor, $15, 9780307744432

22. Wool
Hugh Howey, S&S, $15, 9781476733951

23. Last Friends
Jane Gardam, Europa Editions, $16, 9781609450939

24. Wolf Hall
Hilary Mantel, Picador, $16, 9780312429980

25. State of Wonder
Ann Patchett, Harper Perennial, $15.99, 9780062049810

26. The Art Forger
B.A. Shapiro, Algonquin, $14.95, 9781616203160

27. The Expats
Chris Pavone, Broadway, $15, 9780770435721

28. Rules of Civility
Amor Towles, Penguin, $16, 9780143121169

29. The Snow Child
Eowyn Ivey, Reagan Arthur/Back Bay Books, $14.99, 9780316175661

30. The Forgotten
David Baldacci, Grand Central, $14.99, 9781455523153

31. Fifty Shades of Grey
E.L. James, Vintage, $15.95, 9780345803481

32. Canada
Richard Ford, Ecco Press, $15.99, 9780061692031

33. Stag's Leap
Sharon Olds, Knopf, $16.95, 9780375712258

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

35. 1Q84
Haruki Murakami, Vintage, $16.95, 9780307476463

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

37. Orphan Train
Christina Baker Kline, Morrow, $14.99, 9780061950728

38. Cloud Atlas
David Mitchell, Random House, $15, 9780812984415

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

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

41. What We Talk About When We Talk About Anne Frank
Nathan Englander, Vintage, $15, 9780307949608

42. The 100-Year-Old Man Who Climbed Out the Window and Disappeared
Jonas Jonasson, Hyperion, $15.99, 9781401324643

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

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

45. Calico Joe
John Grisham, Bantam, $14, 9780345536648

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

47. A Land More Kind Than Home
Wiley Cash, Morrow, $14.99, 9780062088239

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

49. The Alchemist
Paulo Coelho, HarperOne, $14.99, 9780061122415

50. The Limpopo Academy of Private Detection
Alexander McCall Smith, Anchor, $14.95, 9780307472991