Nicholas Sparks's latest novel, The Longest Ride, was the top-selling book in the iBooks store for the week ended September 23. Sparks overtook last week's #1, Lee Child's Never Go Back.

Also debuting on the list last week were new releases Thankless in Death by J.D. Robb's at #5, and Nelson's DeMille's novel The Quest at #9. It's About Time Product's guide to the new Apple mobile operating system launched last week, 70 iOS 7 and Legacy Tips, Tricks & Secrets, hit the list at #8.

Top Paid Books

1. The Longest Ride by Nicholas Sparks (Grand Central Publishing)

2. Never Go Back by Lee Child (Random House Publishing Group)

3. The Husband's Secret by Liane Moriarty (Penguin Group US)

4. Fifty Shades of Grey by E L James (Knopf Doubleday Publishing Group)

5. Thankless in Death by J. D. Robb (Penguin Group US)

6. The Cuckoo's Calling by Robert Galbraith & J.K. Rowling (Little, Brown & Company)

7. Unbroken by Melody Grace (Melody Grace)

8. 70 iOS 7 and Legacy Tips, Tricks & Secrets by Saied G (It's About Time Products, LLC.)

9. The Quest by Nelson DeMille (Center Street)

10. W is for Wasted by Sue Grafton (Penguin Group US)

11. Fifty Shades Darker by E L James (Knopf Doubleday Publishing Group)

12. The Fault in Our Stars by John Green (Penguin Group US)

13. Fifty Shades Freed by E L James (Knopf Doubleday Publishing Group)

14. Inferno by Dan Brown (Knopf Doubleday Publishing Group)

15. Gone Girl by Gillian Flynn (Crown Publishing Group)

16. The Final Cut by J. T. Ellison & Catherine Coulter (Penguin Group US)

17. Seduced by Melody Anne (Melody Anne)

18. Infinity Blade: Redemption by Brandon Sanderson (ChAIR Entertainment Group, LLC)

19. The Mayan Secrets by Thomas Perry & Clive Cussler (Penguin Group US)

20. Divergent by Veronica Roth (Katherine Tegen Books)