Parents need to know that Terrifier is a slasher movie about an evil killer clown. Blood and gore are extremely strong, and the violence against women is disturbing. One woman is hung naked upside down (her breasts are visible) and sawed in half from her crotch to her head.
The unexpectedly graphic nature of the violence. The films are not afraid to show graphic violence, and some of the kills are truly disturbing. This can be very shocking for viewers who are not expecting it, and it can stay with them long after they have seen the film.