Signal

The plot synopsis of the film says that the story involves a signal that transmits through all regular forms of electronic media (phones, computers, TVs, radios, etc.) and turns people into zombies, or vampires, or monsters, or something. The trailer I watched, however, was just a series of half-second jolts of random chaotic footage interlaced with TV static. I've seen this technique used before, but this time the trailer never stopped or slowed down to focus on anything. Without even just one iconic image, it's just a mishmash of grainy footage. How's that supposed to interest me?

Also, I see no credit given to Stephen King, which seems like an oversight since this film's plot is identical to the one in King's novel "Cell."