A building with a nice neighbours community that looks too good to be true, or creepily too nice, depends on viewpoint, but I guess US standards on this are a little different. Obviously it turns bad rapidly if you don't respect the rules.

The [spoiler]cat in the oven[/spoiler] episode is already pretty sick and cruel, honestly who would do something like that ? But immediately turns out that much much worse is to come. Follows [spoiler]long sessions of conditioning/brainwashing through physical pain and exhaustion[/spoiler] until you can become a full part of the wommunity.

That's an original subject, there's some interesting scenes showing how the community works ([spoiler]surveillance, Evie's death[/spoiler]), but apart from that, the story goes exactly as you would expect from here: [spoiler]Sarah's conditioning, some resistance, she gets finally in, then rebels when the opportunity arises and gets out, with the expected help from someone not totally brainwashed like her[/spoiler].

A very nice touch in the final scene where [spoiler]it turns out the whole neighbourhood is made of the same kind of communities[/spoiler].

Interesting and surprising idea, but I guess the concept itself makes it hard to deviate from a very predictable scenario. Worth the watch anyway, the main actress is really good and the story flows well, so even if predictable it's never boring.