The trailer for the film "The Orphan" follows a conventional structure by starting slowly showing the family adopting a child named Esther, then revealing something is troubling with Esther through violent scenes. Visuals show Esther tormenting the family but don't reveal outcomes. Genre cues like the orphanage background, isolated house setting, and disturbed child antagonist identify it as a psychological horror. Common horror conventions like these attract the target audience by signaling themes they expect like a troubled individual seeking revenge through common victim archetypes in familiar settings.