Pulse

Pulse is a 2006 American horror film written by Wes Craven and Ray Wright, and directed by Jim Sonzero. It is a remake of Kiyoshi Kurosawa's 2001 Japanese horror film Kairo. The film stars Kristen Bell, Ian Somerhalder and Christina Milian. The film spawned two straight-to-DVD sequels: Pulse 2: Afterlife and Pulse 3, both released in 2008. Plot When Josh Ockmann enters a dark university library intending to meet his friend Douglas Ziegler, he is attacked by a humanoid spirit that sucks the life force out of him. Some days later, Josh's girlfriend, Mattie Webber, visits his apartment, seeing evidence that it has not been well kept. Josh tells Mattie to wait in the kitchen while he walks off. While waiting she finds Josh's pet cat, locked in a closet and dying from severe malnutrition. But when she rushes to tell him, she finds that he has committed suicide by hanging himself with an Internet cable. Mattie and her friends begin to receive online messages from Josh asking for help, but assume that Josh's computer is still on and that a virus is creating the messages. Mattie learns that Josh's computer has been sold to Dex McCarthy, who finds a number of strange videos on the computer. Mattie receives a package that Josh mailed two days prior to his death. Inside are rolls of red tape and a message telling her that the tape keeps "them" out, although he does not know why. Later, Dex visits Mattie and shows her video messages that Josh was sending to Ziegler. Josh had hacked Ziegler's computer system and then distributed a virus. This virus had unlocked a portal that connected the realm of the living to the realm of the dead. Josh believed that he had coded a counter to the virus and wanted to meet Ziegler at the library. Josh's counter-program is found on a memory stick taped inside the PC case with red tape. Dex and Mattie visit Ziegler and find his room entirely plastered in red tape. They believe that the red tape keeps the spirits out. Ziegler tells them of a project he worked on where he found "frequencies no one knew existed". Opening these frequencies somehow allowed the spirits to travel to the world of the living. Ziegler also tells them that these spirits "take away your will to live" and where to find the main server infected with the virus.