Splice is a tricky, tricky film. While some advertisements would lead you to believe it’s a horror movie that focuses on the simple scares of stuff popping out from the darkness accompanied by loud, almost verbose music, those advertisements are deceptive, as Splice is actually a very well crafted film that is thought provoking and even somewhat topical.
I would imagine most people who are very interested in this film are because of the way it was marketed. It’s not a slasher movie, it’s not a monster movie. It’s a science fiction horror film, and it wears those hats very blatantly once the movie begins. The tone of the film is never to scare you by simply startling you, it’s one that requires a bit of thinking to go along with its ride.