Halloween has passed, but Paramount Pictures wants to give you a treat for putting on a creepy face. In promotion of its horror smash hit Smile 2, Paramount Pictures has set up a website where you can watch some of the film for free if you shoot the biggest smile into your computer’s camera.

To do it, you’ll have to activate your web camera on your laptop or phone, and in a small picture-in-picture window alongside the film clip, you’ll see your own face smiling back at you. If you stop smiling like a maniac for even a moment, the playback pauses and turns to black, with a message that says “Keep Smiling.”

Watch a seven-minute free excerpt of Paramount's new horror flick 'Smile 2' online — but the grin you'll need to plaster on your face is not included.

Paramount will let you watch the first 7 minutes of Smile 2, but you have to smile into your webcam during the whole clip

To watch the preview, you have to first give Paramount access to your webcam and then smile the entire time it plays. Yep, you read that right; you have to grin at your computer for the entire seven minutes.

It's possible to check out the opening minutes of "Smile 2" online for free if you're willing to be a bit creepy. Paramount set up a website on Halloween where visitors could watch the first 7 minutes of "Smile 2.