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.

The first seven minutes of horror movie 'Smile 2' were released online for free, but you can only watch if you smile the whole time.

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.

Paramount offers a free preview of ‘Smile 2,’ requiring users to maintain a seven-minute smile through webcam.

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.

Busted! So to see what happens, you have to grin—fortunately, your expression doesn’t have to be as demonically exaggerated as the afflicted characters in the Smile movies, but it’s got to be somewhere between “polite listener” and “beauty pageant contestant.

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