My imagination has spurred its gears again and now I have another idea for a movie or book.
The main protagonist's girlfriend moves to New York to study. They send each other video messages every week as a means of communication. The girlfriend starts to have an affair and the protagonist sees her and another man making love in bed through an accidental video message. Then she goes completely missing. Driven mad by helplessness, the protagonist arms himself with a gun and sets out to find her and bring her back to her senses. It turns out the man she was having an affair with is involved with an illegal underage prostitution group.
Those of you who have read this will be like O_O by now. Keep in mind that I came up with this while I was depressed :p