Snehk's Dreamlands

I was detective working for police, with two female agents I was sent to solve case of serial killer. We drove to a hotel and left our luggage in our room, then moved on to search for clues. First we drove to stables where last murder happened. I got past police blockade and took a look around. The whole place was rundown and stinking, the body was left lying in the middle of the room. No traces of killer. We drove back to hotel and got into about suspects - one woman living in a flat not far from our hotel had argue with recently dead. We drove there, I took a look around her house saying that I'm looking for toilet. In the meanwhile the woman gave agents a cake with special substance that temporarily blinds them. I went back to them and they said that they can't see, so I decided to take them back to hotel. Feeling that this woman wasn't the killer and their argue was just about that cake, I decided to check another suspect - one of teachers of nearby school. I assumed a disguise of janitor, while one of agents took a disguise of my wife, a new teacher in school. I wandered around, searching for any clues. I went back to the hotel, but couldn't open doors to my room at first. When I finally opened it, I saw medical emergency and a girl all in blood. The murderer have attacked, but his prey survived. The girl was a student of nearby school and other teachers decided to visit her in my room. Only one of them didn't payed attention, and hacked into my computer and started looking for magnesium phosphorane on police stocks.