Suspenseful drama has social messages, violence, language. Parents need to know. Parents need to know that as a film about a teenager imprisoned and on trial for murder, based on the young adult novel by walter dean myers, monster has some tough scenes of violence and threats of violence. Weblyle and erik menendez were convicted of killing their parents, jose and kitty, played by javier bardem and chloë sevigny, and accused their parents of sexual. Webthe monster (2021) parents guide and certifications from around the world.