I thought this was rather well done. Everything looked really good, the suspense was well done. The story was well told. Some characters made some bad decisions. I thought the ending was particularly good.

I'm not big on gore, and this film had very little (though there were a couple scenes that I did look away for.)

Most of the characters had a good mix of likable and unlikable qualities, most of them seemed realistic, though there were a couple moments here and there where I don't think a real person would talk or act that way.

I also thought that the existance of social media and ubiquity of cell phones was used well in this film.