Two final recommendations for you if you're interested in TV series on DVD/Blu-Ray:
Wayward Pines is based on the novels of Blake Crouch. The pilot was directed by M. Night Shyamalan, and he is one of the executive producers of the series. The inhabitants of Wayward Pines are trapped there by an electrified
fence, and any attempt to escape is punished by a public execution known as a "reckoning". This is an offbeat series where what is going on beyond the confines of the small town is gradually revealed to the viewer. (The series reminds me of Shyamalan's film The Village.) I've watched only the first season; the second season is currently airing on television.
Although Fargo doesn't fit into the horror/science fiction category, it's excellent viewing for those who enjoy black comedy and missed the first two seasons when they aired on television. The series was inspired by the movie Fargo, and the Coen brothers are executive producers of the show. Fargo has won a series of awards and stars an excellent cast. I was especially impressed by Ted Danson's performance and that of Kirsten Dunst in Season 2.