GG - Research into Setting

The Location—Many slasher films are set in isolated locations such as on islands, deep in forests, small towns, abandoned buildings and farms. The killer may have a connection to their chosen location, such as from a tragic event or just live/frequently visit. The locations are genuinely low populated, sometimes with very few to no inhabitants and are far away from civilization, which can present a problem for the police and other emergency services to arrive quickly if requested by the victims. However mobile phone reception may be too weak to make a phone call, and the killer can isolate his victims further by cutting the phone or electrical lines, disabling communication devices (short wave radio) and destroying their means of escape such as their vehicles which makes escape near impossible. This can allow the killer to freely kill his victims without the need to worry about interference from the outside world. 

                                            Source: (wikipedia.org/wiki/Scream_queen )