'We Need To Talk About Kevin' International Trailer Released, Tilda Swinton In Horror Film (WATCH)

08/09/2011 03:44 pm ET | Updated Oct 09, 2011

There are some films that really know how to burrow themselves in your mind--you're too afraid to go outside and too afraid to sleep--and that is, ultimately, the judge of whether or not it's a successful thriller.

'We Need to Talk About Kevin' is, unambiguously, one of those films. Except, this time, you may find yourself terrified of ever having children.

Starring Tilda Swinton and John C. Reilly, this harrowing flick follows their marriage and the seemingly innocent birth of their son, Kevin.

The newly released international trailer has a sunny set-up: love in the streets, pregnancy and birth. But, of course, we realize it's not all so rosy (though there is plenty of red).

Kevin, played by the soul-piercing-eyed Ezra Miller, is a psychopath with a taste for death--and there's the rub.

Directed by Lynne Ramsay, this film--as beautiful as it is terrifying--was a stunner at Cannes. And there's no doubt that it will be keeping quite a few of us up at night.

WATCH: