Abigail isn't exactly a novel idea but its executed convincingly enough to offer up a moderately watchable, horror, experience.

In spite of its grounding in vampiric horror, I didn't find Abigail especially frightening. There's no sense of creeping menace and frankly, that's a shame. It does "have a go", so to speak, at first but never really takes it far enough or handles the material subtly enough, to pull it off.

Instead, Abigail is more in line with you standard vampire fare, where for the majority of the film you know who and what, you are dealing with. This tends to move the narrative and exposition, more towards a bloody action framework. 

This film is not unwatchable, don't get me wrong. The acting is decent, the setting appropriately creepy and the horror sequences are polished. That said, I did find myself feeling like I'd seen it all before, in one sense or another.The ending fizzes when it could have "popped", too.

In summary, Abigail's handling feels like a missed opportunity to do something far more terrifying and creepily menacing, than what we get with the actual final product. Not bad but nothing special.