Q. Is there a way to return or check-in an eBook I downloaded in OneSearch?

Yes, for eBooks you have downloaded to a separate eReading program such as Bluefire for mobile, you can return these books before they are due. To find instructions on how to check in a book on Bluefire, please visit the eBook LibGuide.

Also check this page: Can I check-in my EBSCO eBook before the end of the checkout period?