The unnamed man welcomed you into the house, even showing you around a bit. The police had sent you rather than themselves, mostly to make it all seem more casual so it'd be easier for a killer to confess. The man knew this, however. When you both were in the bedroom which used to belong to the now dead man, he decided to pull up a couple chairs.

"Oh, yes, that shriek last midnight was mine. I had simply woken up late in the night and tripped over some object."