Blake Crouch, if you are unfamiliar, writes a lot of creepy-in-a-realistic-way shit. His style of creep speaks to that darker side that all of us have. Each of these short stories is drastically different, but still each creates a fabulous world. I was really impressed by the multiple stories where I didn't see the twist coming until the last second, which, it seems to me, must be way harder than in a full sized book.
If you're looking for variety, or love thrillers and mind benders- definitely check this collection out. (You can also get most of the stories individually on Kindle, if you think you're only interested in one or two.)