M. Night Shyamalan balances humor and horror in "The Visit"

M. Night Shyamalan is back and this time, he's injecting some humor into the horror genre.

This time, the man who directed more serious thrillers like "The Sixth Sense" and "Unbreakable," said he wants to make his viewers laugh as much as they scream when they watch "The Visit.

The movie follows siblings Becca and Tyler as they stay with their grandparents. When they arrive at their grandparents' house, something seems off, even if their mom insists their grandparents are just weird because they're old.

For example, Nana and Pop-pop tell the kids to stay in their rooms after 9:30.

"Becca and Tyler's main goal is to bring their family together," explained Olivia DeJonge, who plays Becca.

Little do they know that this will be the last they'll spend a week at their grandparents' home.

Shyamalan even separated the young actors, DeJonge and Ed Oxenbould, who plays Tyler, from the actors who played the grandparents so that they would have a genuine tension.

"More often than not they wouldn't say anything, they wouldn't talk to anyone," Oxenbould told CBS News. "It paid off in the end, they were both super scary and it was fun reacting to them."

Super scary, yes, but the movie is also meant to be funny. Shyamalan said it was a challenge to do both.

"It's a very delicate balance between suspense or threat, and then humor, which theoretically empties the tank of tension," said Shyamalan.

"The Visit" opens Friday.