Series 2.
If you are prepared to suspend your critical faculties, it's an entertaining watch.
The script is unconvincing and unexpectedly funny when it's meant to be very serious. There is some terrible acting, but maybe that's because of the script.
However the effects are good.
The ending didn't make sense, not if you followed how the bombs are meant to be activated, or maybe there was a subtlety that I missed.
I enjoyed it, you may not.