The Knocker (knock-knock)

It was an ordinary summer evening: it was already getting dark, monsters were gradually appearing, forcing the villagers to hide in their houses, driving them into fear and leaving an iron golem to guard the village. Every day this was repeated, it was boring, but at the same time it was damn necessary (you could knock out resources from the monsters that would be useful for crafting things)
Although no, this evening, like others, was unusual for Melissa from the moment strange gifts began to appear under her / his doors and things began to disappear from the chests. Melissa always wrote it off as the pranks of the villagers and did not attach much importance to it, however, it was worth being more careful ...
When the player checked the chests, there were no resources there again, and s / he did not attach any importance to this.. AGAIN.. But due to inattention, s / he did not notice how, along with the gift, in the corner of the room stood He... A tall man, all in black, which is why he was almost invisible in the thick darkness and only the dim light of the lamp. He didn’t do anything, he just... watched...?