This is definitely not one for everyone and that's okay, sure, but to assign it a 1-star or 2-star rating as some have done, is just ridiculous, especially when the disconnect certainly is on the side of the viewer. In fact, those who deemed the acting 'bad' (one reviewer notes: "I thought the characters were robots") missed the entire point of the film.
While, admittedly, the acting from the girl who plays the daughter is flawed, both the acting from the rest of the cast and the way in which the story unfolds is purposefully meant to make you feel highly uncomfortable - and it succeeds.
From the very first scene, to where your mind goes in regard to the sexual nature of the relationships, to the inappropriate or generally eyebrow-raising topics of discussion between some of the characters, this film is MEANT to BE "creepy" and to make the viewer FEEL odd, off - and even dirty.
Much of the creepy-factor, if you will, comes PRECISELY FROM the amazing way in which most of these talented actors made these characters come across as disturbing, unappealing, ALMOST like most of us, ALMOST worth sympathizing with, but not quite. (For those who have watched it, imagine how forgettable this movie would be had the acting been that of the normal or run-of-the-mill television family). Again, everything from the topics of conversations to their postures to their almost detached delivery, was purposeful and meant to lend to the eeriness of the film, and the discomfort of the viewer.
While The Killing of a Sacred Deer may not go down as a family favorite or as one we watch over and over, it is definitely engrossing for its running time and more importantly, it isn't the thousands of other films on hundreds of streaming sites with nothing to say for itself. In short, for those who specifically look for and enjoy films which are not the standard fare, this one is a should-watch.
7.6/8.