the point of view I used was limited omniscient

The police officer knocked on the door with suspicion. When someone answered the door the police officer was told by the man living in the house that the noise he heard was from himself from a nightmare. The police officer and his fellow officers entered the house searching around for anything suspicious, when the police officer didn’t find anything then took a seat in the old man who was on vacations room. And chatted with his fellow police officers and the man offered us a drink, we suddenly noticed the man who welcomed us in was turning red and was sweaty as if something was screaming at him and making him nervous, he screamed and interrupted our chatter, by saying and showing us that there was a dissembled body beneath the floorboards, and it was the old man whose room we were in.