Pretty good movie with great vampire concept and fantastic premise and setting. Characters do make you care, atmosphere is strong, and in places it's tense and scary. Would have benefitted from extending the first 'what's going on?' section of the film, which was excellent and resolves a little too quickly. Then reduce the length of the second half which is a bit disjointed, and you don't always know why the characters are doing what they decide to do. Gets a bit random, to be honest. Still enjoyable though.