Scorsese insisted on using practical effects as much as possible. Those rainstorms? Real. The menacing rock walls? Built. The cigarette smoke in the interrogation rooms? Natural. It’s why the film feels so tactile and grimy.
Fun fact from the set: Leonardo DiCaprio would stay in character between takes, walking the Medfield hallways in his rain-soaked coat. The crew said the silence was unsettling. It clearly paid off—every grain of dust on screen feels deliberate.
You know that famous line, “What happened to Rachel Solando?” The room used for that interrogation was a real, untouched doctor’s office. The peeling paint and water stains are 100 percent genuine decay. No set dresser needed.