Meet the first episode of a famous series of detective games Who Is The Killer? You have found yourself being trapped in the castle with seven characters, and one of them is a murderer. Every day one of the charecters is killed, only you can stop the killer.

Your friend the Baroness has invited you to stay at her castle for a few days. Besides you, there are several other guests here. Unfortunately, a blizzard has blocked the road and you have to stay here for at least another six days. There was an accident this morning. Something directly related to your area of expertise...