The dark gradient and gloomy skies from Shutter Island signifies the mystery’s held within the asylum and the horrors surrounding it, the trench coats worn are a dull grey colour which connotes the character being a strange man with unknown intentions this Is also reinforced with uncomfortable stance using his long trench coat to cover himself, this could indicate the character hiding secrets. His questioning expression also suggests his unfamiliarity with his current situation and what he may be looking towards, this mirrors the weather and the mood of the scene. It is also unclear what the following scenes will hold allowing to form your own opinion next alongside with the characters.