On Halloween weekend, movie audience are in the mood to scream, and that’s a good news for the producers of one of the movies at the top of the box offices right now, Paranormal Activity, it was cheap to make, and it's bringing in big box, so what makes frightening flex such good business, NBC’s Miguel Almaguer explains.

Let me see here.
No liberty, no me.
It was what movie goers want.
My hand s are shaking, cause I’m really scared.

And was so many expected in this Halloween. A frightening love affair with horror, the cold classic Halloween. It's over 30 years old. Movie studios count on chief thrills to bring in big box.

Take Saw, a serial killer who dreams up in advanced way to murder his victims. It’s now when its 16th storming and it remains one of the most successful franchises in movie history.

There was the built-in audience, and that in this time of year, wants to go to the movies, and they want to be scared, this film delivered out.

It’s not just block bastard that can make a fortune, even though most major films have the big studio behind them, when it comes to an old fashion scare, it doesn’t cost millions to make millions.

Do you think there is something in the house, I don't know.

You believe me right?

This suspense thriller Paranormal Activity, cost only 15,000 dollars to make, but it’s made nearly 17 millions since it's released in September.

In a new marketing ploy, the studio used the internet to generate buzz asking fans across the country to demand screaming in their hometowns. Soon cities like Orado, Ost and Chicago had sell-out shows.

They have to find it, you can’t sell it.

John Penny and Jeffrey Obrow know a finger to about horror movies, they made Bram Stoker’s the Mummy, in 1997.

It is the same, as a rule accross right, it’s a general and in a rush.

And that would keep drawing those long lines this weekend, the only thing scarer than these movies is how much money they’ll make.

For Today, Miguel Almaguer, NBC, Hollywood.