"Full Dark, No Stars" is a collection of four novellas, I guess; they're too long to really be short stories. 
 The first one, "1922" was probably my least favorite. It starts out interesting, but then seems to lose momentum as it goes. There are aspects about it that I love, but I felt it had a very poor ending. I suppose you're left hanging on purpose, but to me it felt like the story just stopped, as if King just got tired of writing it. 
 "Big Driver" is one of the two best stories in the book, in my opinion. It's scary, but what makes it scary is how realistic and believable it is. The main event in the tale is something that many people fear happening everyday. It takes a turn towards the end that would be more at home in an M. Night Shyamalan film than a Stephen King novel, but the story works despite it. 
 "Fair Extension" was kind of an odd story, I thought. Nothing much really happens in it. Actually, a lot happens. The story has a fully developed plot and yet I couldn't seem to really care about any of the characters or their problems. It seemed shallower than what you would expect from King. It did remind me a little bit of the short story "The Man in the Black Suit" from the book "Everything's Eventual", but that isn't unusual since King seems to like working with the same themes, characters and locations over and over again. 
 "A Good Marriage" is the other half of what I think are the best stories in the book. Like "Big Driver" it concerns itself with something that could possibly happen to anyone. It isn't a scary story, but it is a story that might make you wonder how much you really know about the people you think you know. I think at one point or another we all wonder how well we actually know the people closest to us or how much they really know about us and "A Good Marriage" explores that in a really true-to-life way. The ending is weak, but this seems to be a book of weak endings, so I cut it some slack for it.