Like most of you, I thought the movie pretty much sucked 2/3 of the way in, after Sam died. Everything up to that point was amazing. It was creepy as hell and really gripping, and then all of a sudden...

Psychic-Hispanic woman shows up despite the lack of access to the island! Oh hay, a mute kid just like in all horror movies! Why are they there? Who cares, it will wrap things up nicely.

And what's this?? Heavy religious themes out of fucking nowhere??

It really didn't sit well with me and I couldn't figure out why until I read the synopsis and ending of the original book. It just felt tacked-on and poorly handled. Too much Deus-ex-machina = lazy writing imo.