The set is very poorly made and if I had to guess, I would say they are cheap Chinese knockoffs. We were unable to watch even one complete season. Several of the episodes failed part way through and some disks wouldn't even load. I have never had this happen before! My DVD Player is a new Sony and it will play scratched Netflix movies all day long. When you look at the disks, they look just fine, but they obviously were made with defective equipment. The set was a birthday present from my Wife and she bought it two months before my birthday, so Amazon would not take the set back. A very expensive paperweight! I never heard of the company Amazon got this from, and other people seem to have had no problems, but be careful.