Heat Vision has announced that Saw VI director Kevin Greutert has signed on to direct and Michael R. Perr will write the sequel to Oren Peli's unexpected box office hit Paranormal Activity for Paramount Pictures.

Made on a shoestring budget of about $15,000, Paranormal Activity became a box office sensation as it earned $151 million worldwide.

Paranormal Activity 2 is expected to premiere in theaters October 22, the same weekend as Saw VII 3D.

RELATED: Long Lost Paranormal Activity Audition Videos Uncovered by Director

Jason Blum and Oren Peli are producing Paranormal Activity 2.

"These guys get it, and the fans won't be disappointed," said Peli of Perry and Greutert's participation.

The filmmakers are keeping the story line - as well as the film's actual title - hidden in the attic.