This is filled with so many halfway efforts, I'm convinced the director just wanted to make a movie that looks good. Vague story (which is so unoriginal, therefore it hurts the film to be that vague), random characters with fake problems (sister's issue with her brother seems so forced. I literally don't know why she cares so much, the actress is playing more of a disgruntled ex girlfriend than a caring sister. The stakes should have been MUCH higher for me to care about that sibling issue. The mother wasn't mentioned as being bothered by the marriage of her brother and the fact that i don't know why the sister needs to play "mom" when they have a mother already in the picture is confusing. Again, the stakes aren't high enough, comes off as "oh yeah, I need subplots and stuff").
I think we already know these characters have 0 personality. Any one of them could say each other's lines and it would've made no difference. Unbelievable dialect, the director/writer doesn't seem to know how a group of friends talk. Not to mention, the intro to this friends group was so in your face "can't you see we're friends?!" No individual personality that the actors could draw from cause I bet the director didn't write it for them.
Talk about stories unwritten, the little girl, invisible monster is a story given little thought. I mean, think this through!!! Don't hash out some vague imitation of other ideas and expect us to buy it!
If the director wanted to film a good looking movie, he did. It looks good for the horror genre (aside from the CG gaseous thing). But that's all it has. Direct other people's stuff, not your own writing.
Too many minor details to go into how many holes the movie has, but just know it gives 50% effort aside from knowing how to look decent.