What to expect?
• If you are expecting a lot of horror elements, you may be a bit disappointed. There are lots of movies and shows with similar set-ups, that are more frightening. The reason is anticipation and fear of the unknown. I can't speak for the rest, but the first 7 episodes failed to instill a sense of fear in me.
• If you do not like watching gory scenes, then watch with caution.
• The storyline is still interesting. You will want to keep watching till the end and you'll root for the main characters with all your heart. Part 1 ends with a cliffhanger.
• The actors are great. They have conveyed the emotional implications quite well.
To conclude, this series is good entertainment. If you are up for some sci-fi without looking into logic much, go ahead and enjoy.