10 Scariest Movies That Aren't Horror

10. We Need to Talk About Kevin

Tonally and stylistically, Lynne Ramsay's masterful We Need to Talk About Kevin tap-dances on the fringes of horror throughout, even if it's officially a psychological thriller-slash-drama.

Ramsay's movie is basically every parent's worst nightmare, as Tilda Swinton's Eva struggles to reckon with her inability to bond with her son Kevin (Ezra Miller), and come to terms with the subsequent heinous act he commits as a teenager.

Tripwire-tense, awash in the colour red, and leaving enough ambiguity hanging in the air to haunt viewers long after the credits roll, We Need to Talk About Kevin broaches an extremely difficult subject with both tact and honesty.

A young Miller is remarkably chilling as the title character, and, in an era where explosive acts of violence are commonplace across America, its messaging feels only more vital than it did back in 2011. It's not an easy sit, but it is a refreshingly confronting piece of work about a subject many simply don't want to discuss - how psychopaths are made.