The Loch: A Scottish Fishing RPG“Nobody” Sequences

Context: While exploring the area around the Loch, the player can find an abandoned house in the woods which leads to a well outside, where unusual fish can be caught. On their first visit to the house, there’s very little to interact with – however, after visiting the house for the first time, the player can find a letter on a bureau inside the supposedly-abandoned house, which seems to be addressing them. On return visits to the house (engineered by having the player visit the well to catch fish under different conditions/with different fishing tools), other letters appear, and their content becomes increasingly erratic and strange. This letter may be connected to an uncanny, unnamed figure that sometimes appears outside the Pub beside the Loch, who speaks cryptically about events happening in the area, and seems to imply they know about the player character entering the house...