1. “The Girl on the Train” by Paula Hawkins (Riverhead)
2. “American Sniper” by Chris Kyle, Scott McEwen and Jim DeFelice (William Morrow)’
3. “Fifty Shades of Grey” by E.L. James (Vintage)
4. “To Kill a Mockingbird” by Harper Lee (Harper)
5. “The Nightingale” by Kristin Hannah (St. Martin’s Press)
6. “Crash & Burn” by Lisa Gardner (Dutton Adult)
7. “Gone Girl” by Gillian Flynn (Broadway Books)
8. “Private Vegas” by James Patterson and Maxine Paetro (Little, Brown)
9. “All the Light We Cannot See” by Anthony Doerr (Scribner)
10. “Unbroken” by Laura Hillenbrand (Random House Trade Paperbacks)
11. “Fifty Shades Trilogy Bundle” by E.L. James (Vintage)
12. “Fifty Shades Darker” by E.L. James (Vintage)
13. “Fifty Shades Freed” by E.L. James (Vintage)
14. “Wild” by Cheryl Strayed (Knopf)
15. “Big Little Lies” by Liane Moriarty (Amy Einhorn Books/Putnam)
16. “Green Eggs and Ham” by Dr. Seuss (Random House)
17. “The 20/20 Diet” by Phil McGraw (Bird Street Books)
18. “Still Alice: A Novel” by Lisa Genova (Pocket)
19. “One Fish Two Fish Red Fish Blue Fish” by Dr. Seuss (Random House)
20. “Ghost Boy” by Martin Pistorius (Thomas Nelson)
21. “The Boys in the Boat” by Daniel James Brown (Penguin)
22. “The Maze Runner” by James Dashner (Delacorte Books for Young Readers)
23. “American Sniper: Memorial Edition” by Chris Kyle, Scott McEwen and Jim DeFelice (William Morrow)
24. “Gray Mountain” by John Grisham (Doubleday)
25. “Are You My Mother?” by P.D. Eastman (Random House Children’s Books)
Reporting stores include: Amazon.com, Amazon Kindle, Barnes & Noble.com, Barnes & Noble Inc., Barnes & Noble e-books, BooksAMillion.com, Books-A-Million, Bookland and Books & Co., Costco, Davis-Kidd Booksellers (Nashville, Memphis), Hudson Booksellers, Joseph-Beth Booksellers (Lexington, Ky.; Cincinnati, Charlotte, Cleveland, Pittsburgh), Kobo, Inc., Powell’s Books (Portland, Ore.), Powells.com, R.J. Julia Booksellers (Madison, Conn.), Schuler Books & Music (Grand Rapids, Okemos, Eastwood, Alpine, Mich.), Sony Reader Store, Target, Tattered Cover Book Store (Denver).
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For the extended, interactive and searchable version of this list, visit http://books.usatoday.com/list/index