First of all, let it be clear, Dark Light isn't a gem nor a masterpiece but in this genre (horror/sci-fi) it's worth a watch. There is a good tension building throughout the movie, mostly due to very good sound effects (I can't say enough how this part is essential if you want a good horror movie), a refreshing story (it's a bit different than the usual entities or monsters), some decent actors, and a completely new vilain (credits for the originality). That said you won't be blown away but it's entertaining for this genre of movies. Dark Light deserves a higher rating than it actually gets.