Watch Bystander Effect for Free: How to Stream the Movie Online at 123Movies. . Take the next best residential neighbourhood. A man is on the look-out for a victim. Within a couple of minutes, he chooses a young woman. He hunts, stabs and rapes her. As he dwells on his vicious performance of the crime, the residents turn into a dormant audience while they stand by and watch the rapist’s captivating show.