I enjoyed this show. After watching the first episode on a Friday night, I felt compelled to watch another three, and then the remaining episodes the following day.
Lots of twists, and some interesting characters kept me intrigued - I especially liked Hannah John-Kamen's portrayal of The Stranger.
Some things bothered me, though. Why do all of these people live literally in the same road, opposite each other, go to the same school, attend the same football club, etc. That seemed a little too 'convenient' for me. These, and some other coincidences (which you'll see) made things a bit detracting for me. This all culminated in an ending which was OK but, again, just a little too convenient.
Having said all of that, it was quite an entertaining eight episodes and I'd recommend giving it watch!