House of crooked walls

Japan, Christmas 1983. The rich industrialist Kodburo Hamamoto gathered in his mansion of friends and acquaintances. The guests are struck by his house - a bizarre structure with many rooms, inclined floors and it is not clear much with the leading stairs, with a "falling" high tower resembling a Pisan. All of them are admired by the fantasy of the owner and are preparing to meet Christmas fun.
But their expectations are not destined to come true. Because in Christmas Eve in the house there is a murder. The driver of one of the invited dies from the blow with a knife. Urgently called police officers in complete confusion. After all, the murder was impossible to commit - all the circumstances and conditions against this. And no one has a motive ...
While the inspector and assistants are racking their heads, and the guests are in prostration, the second murder takes place in the house, even more incredible. Having contacted the superiors, stunned police officers learn that a person who is able to find a criminal is going to them. That this is an astrologer and fortuneteller from Tokyo Kiyoshi Mitarai. And that only he alone is able to figure out this breathtaking puzzle ...
You will have all the necessary keys. But can you find a guess before the detectives do it?