I loved watching this, it was so interesting and engaging that I finished both series in just a few days. I found I was able to understand most of the science bits which really helped in understanding the plot. There are scenes which may be disturbing to some younger viewers, however, this wasn't and issue for me. My favourite characters were Tim and Jack because Tim has really great character development and Jack is such a badass. I wholeheartedly recommend it to every teen/young adult! All I hope is that there will be a season 3 as I feel that the 2nd series is left on an uncomfortable cliffhanger.