The Elevator Horror

The Elevator Horror is a horror game in which you play as a receptionist, you receive customers and check whether they are on the list or not and make decisions to skip or not.
You are working and nothing seems to have happened and suddenly you notice something wrong, some kind of incomprehensible silhouette, it appears in different places and something is wrong with the elevator.
You tune in to this, then a call rings and you are informed about the killer in your area and his signs, after which you experience one of the most terrible moments in your life and do not understand whether it was real or a dream, you will see the killer at this moment and he turned out to be one of the hotel guests.
The game is fascinatingly scary, very interesting and I want to find out what's next, finish this plot.