You are a famous private detective who has investigated many cases and helped many people. One day, a mysterious letter arrives to you. 

It tells us that his close friend has disappeared. After he said he was going for a walk, no one saw him. You are asked to help find him and are given access to his house, maybe there is something interesting there. 

The letter was signed as "A.N.Onym". You decide to do something, but something is definitely wrong in this house...

Welcome to the mansion, which is shrouded in mystery. You have the layout of the whole house, but... Why is this mysterious door not marked on the layout? 

Complete the puzzles to open this door, maybe there you will learn the main secret of "Something".

WASD - movement

Shift - running

E - interaction

Left mouse button - use the item