"Paranormal Activity" is back with the scariest video chat session ever.

The trailer of the fourth installment of the horror series -- which may or may not star Dianna Agron as the newest supernatural-stricken victim -- has hit the web. And, guess what? Something fishy's going on...

From Henry Joost and Ariel Schulman, the shaky-footage series has gone on to be extremely popular at the box office; the three previous films have raked in close to $300 million.

Leave your lights on and check out the spooky trailer above.

"Paranormal Activity 4" hits theaters October 19.

CATEGORIES Movies