It's An Open House -- Of Horrors!

Let the buyer beware.

That'll teach them to home-hunt before Halloween. Watch these unsuspecting buyers attend an open house that turns spooky, then terrifying.

And that's before they even try to apply for a mortgage loan.

Seriously, if you enter the house from the original "Paranormal Activity" movie, as these folks do, you deserve what you get.

Paramount rigged up the abode with all kinds of scares to promote its next entry in the franchise, "The Ghost Dimension."

And to all those who got pranked, it could have been a lot worse. Norman Bates could have been the real estate agent.

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