It's good in parts and I agree that it starts slow but it's well worth sticking with it for the scenery alone (although that makes it sound as if nothing else is worth watching. I don't mean that, it is)
Actors some New Zealanders know and love, mainly from soaps, feature here which makes it interesting locally and the tension level is maintained by some good cliff-hangers.
I don't agree with another reviewer that the acting is terrible, though some of the script can verge on the corny but who takes this sort of thing entirely seriously anyway?
I have a vested interest in this series though, I own one of the white coffins used in the series :-)