Under the Stairs

Under the Stairs is a secret room in Gloomy Manor in Luigi's Mansion: Dark Moon, under the stairs of the Foyer. To access it, Luigi must use the Dark Light in the middle left of the Patio. There is nothing really noticeable about this room, except that it has three Gold Spiders. There are two doors in Under the Stairs, one that leads back to the patio, and one that leads to the foyer, allowing Luigi to get an Amethyst.