Viral (1970)

Sinopsis

There have been a series of murders over the past months, and a young YouTuber named David believes he's found the killer living on his street. The suspected killer agrees to be interviewed by David, but then kidnaps David and proceeds to torture him. David manages to escape the clutches of the murderer, but to his horror, no one believes that the murderer is really his neighbor; or is even real at all.