Do you have a thing for psychopaths wearing creepy masks? Well, if so, you might want to steer clear of 'The Purge' trailer which, as you can see above, has some really, really creppy masks going on. And that's just scratching the surface about what's creeping us out about 'The Purge' trailer.

'The Purge' is a sci-fi / horror / thriller that stars Ethan Hawke as the father of a family in a futuristic society where the government has sanctioned an annual 12-hour period in which any and all crimes - yes, including murder - is legal. There's no police or EMTs and the hospitals don't let anyone in.

But Hawke's daughter is freaked out when a bloody man approaches their house and begs for help so she lets him in. And things go from bad to worse.

It's a smart little twist on the home invasion thriller and this trailer nicely sets up the action without giving too much away. If the thought of murderous weirdos creeping around your house with masks and machetes and absolutely no worry of getting caught is enough to freak you out, this trailer should send chills up your spine. Frankly, this is a movie we hadn't much (if anything) about prior to seeing this trailer but it's possible this could be a surprise hit this summer.

You can check out 'The Purge' trailer below and the film hits theaters on May 31.