If you’re a Kindle Unlimited member and have borrowed or returned a book, there’s a good chance that it’s in your Kindle account’s history. If you want to delete the book from your account, follow these steps:

  1. Log into your Kindle account and click on the “History” tab.
  2. Scroll down to the bottom and select “Borrowed books.”
  3. Click on the “Delete” button.
  4. Your book will be deleted from your account and you’ll need to re-enter your password if you’ve forgotten it.