Wow, that's a bad trailer!
I can only imagine this will be one of a few trailers, each edited differently to target a different audience who hasn't read the book. Obviously, this one is for the family-values crowd who likes traditional happy end-romances. You know, like this one:
Later (I hope) we'll see one focusing on the sort-of thriller and paranormal aspect (young male audience) and then most importantly, a balanced trailer that better reflects the book.
I've seen this happen before and remain optimistic.