Plus point - The excellent storyline, although not exactly original, keeps you in suspense the whole way through (not surprising given that it's a thriller after all) and it's highly unlikely you'll guess the ending until it arrives. Minus points - the ending is somewhat of an anti-climax and appears rushed. Ken Scott, while generally excellent as the lead character, does have a tendency to over-do it on a couple of occasions. This is the first Messiah I've seen and all-in-all, not a bad way to wind down in the evening, but unless you're a keen fan (the sort who reviews a mini-series before the last episode say), I wouldn't make a big effort to catch a repeat.
Review of Messiah: The Harrowing
