Responses
When you say Tae do you mean Yeon Woo? The author/owner of the house is Yeon Woo and the policeman is Tae Joon.
I think it could go either way, but clearly Tae Joon has dissociated that part of himself that is reflected in the mirrors to cope with what happened.
No I mean Tae I think he had issues way before coming to that house.
I think just hear me out that Tae was the influencer on Jun's life meaning I think Tae is the one who killed someone while Jun was around that is feeling I get. I feel like Tae is actually the one that is really unstable.