Pros:
1. James McAvoy (Dennis) and Anya Taylor-Joy (Casey Cooke) give amazing performances, with both of them having to carry the film. James McAvoy, in particular, did an amazing job at portraying different people by altering his facial expression and vocal intonation.
2. The score helps to imbue the tense scenes with an uneasy feel and it's never overused.
Cons: 1. For some strange reason, The Beast (James McAvoy) lets Casey Cooke go because she's got scars from her cutting herself. The only explanation we get for this is because she is "impure" thus she is not worthy to be consumed. It's ridiculously ambiguous.
2. The Beast could have killed Casey Cooke near the beginning of the chase scene but conveniently decides to let her run away.
3. There are a plethora of needless flashbacks to Casey Cooke (Izzie Coffey). Not only do they pointlessly add on more runtime but they also decide to show her Uncle John (Brad William Henke) abusing her. It's utterly forced and head scratching.
4. Claire Benoit (Haley Lu Richardson) and Marcia (Jessica Sula) serve no other purpose than to take up scenes as their characters don't do anything after the first half of the movie.
5. The plot is completely ridiculous with Dennis suffering from a dissociative disorder which, with The Beast, somehow causes him to change his physiology to become faster and stronger - he somehow absorbs two shotgun blasts. It also doesn't help that his entire purpose is to cleanse via his pseudo-religious mission of devouring the pure - it's nonsensical and boring.
2. The score helps to imbue the tense scenes with an uneasy feel and it's never overused.
Cons: 1. For some strange reason, The Beast (James McAvoy) lets Casey Cooke go because she's got scars from her cutting herself. The only explanation we get for this is because she is "impure" thus she is not worthy to be consumed. It's ridiculously ambiguous.
2. The Beast could have killed Casey Cooke near the beginning of the chase scene but conveniently decides to let her run away.
3. There are a plethora of needless flashbacks to Casey Cooke (Izzie Coffey). Not only do they pointlessly add on more runtime but they also decide to show her Uncle John (Brad William Henke) abusing her. It's utterly forced and head scratching.
4. Claire Benoit (Haley Lu Richardson) and Marcia (Jessica Sula) serve no other purpose than to take up scenes as their characters don't do anything after the first half of the movie.
5. The plot is completely ridiculous with Dennis suffering from a dissociative disorder which, with The Beast, somehow causes him to change his physiology to become faster and stronger - he somehow absorbs two shotgun blasts. It also doesn't help that his entire purpose is to cleanse via his pseudo-religious mission of devouring the pure - it's nonsensical and boring.