On a scale of 10, I'll give it a 7.5. I think the story should have had some more scenes depicting the anger and crimes of the beast, also at some point the story moved on slowly. Felt like it was being dragged or something.
Over all, it was good, the twists were good. I mean I enjoyed the little twists, the characters were pretty well portraited. The writer did justice to the both main characters and I am actually quite happy with the way the story ended.