The season worths a five-star review but the one-star I gave was for the Blu-ray disc set production. Disc 4 was defective in that the menu didn't work properly and the second episode thereon couldn't be played. I have returned one set and the replacement had the same problem. I have asked for a refund. I hope that the problem will be fixed soon so that I can buy and keep the Season 6 Blu-ray set.