Elizabeth is shaken and immediately takes the video of the murder to the police, who acknowledge that it appears genuine but advise her that such snuff films are usually faked, and there is little they can do about it.
Though Elizabeth later stumbles upon a disturbingly realistic depiction of a death during a game of Russian roulette that turns out to be faked, and her friends (including Max, who is a computer scientist) insist that it is a hoax, she remains unconvinced and is determined to solve the murder.
While chatting with strangers with Jenni, Elizabeth encounters a woman whose webcam appears to be broken.
The attacker fixates on the father of Lynn's child, who she is separated from, irritating her.
The attacker leaves and gets into a car and follows Elizabeth back to her home, where she is packing in preparation to keep her sister company.
For her graduate project in sociology, she proposes to chat with as many strangers as possible and calculate how many meaningful conversations she can accumulate.
The graduate board reluctantly gives her a grant, with the help of Sally, one of her friends on the graduate board pushing for her approval.
Afterwards, Elizabeth's account is hacked, and her webcam is repeatedly turned on without her permission.
The stranger attempts to chat with Elizabeth again the next day while she is in a coffee shop, but logs off quickly when another customer approaches the webcam.
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The movie begins with Elizabeth logging into a webcam-based social media site known as The Den, which allows users to chat with random strangers across the world, similar to Chatroulette.
Meanwhile, Jenni is lured to Elizabeth's house by the hacker, who pretends to be Elizabeth and abducts her when she arrives.