パラノーマル・アクティビティ
The film is the first (chronologically, the third) entry in the "Paranormal Activity" film series. A parallel sequel and prequel, "Paranormal Activity 2", was released in 2010. The success of the first two films would spawn additional films in the series: the prequel "Paranormal Activity 3" in 2011, and "Paranormal Activity 4" (the sequel to the second installment) in 2012. The fifth installment, ', was released in 2014, and the sixth installment, ', was released in 2015.