Don't believe the harsh reviews from people writing reviews in their mother's basements. This is a good, solid, well-crafted movie that's entertaining. To me, a movie is good and entertaining when I'm not wondering how much longer before it's over. Blackmark is like walking out of a fog - it starts a bit slow and is a little confusing, but as it goes along it builds momentum so by the end you're right there and caught up in the drama. And, like coming out of a fog, you see things clearer and clearer as the movie progresses. What makes that interesting is you want to watch it again - and it actually plays better the second time because you now understand and have context for the whole story. Most importantly, it's just as entertaining the second time around.