Things get really interesting when Greta's ex-boyfriend Cole actually shows up, having muscled the UK address out of her friends back home. Brahms does not like this. He terrorizes Cole by putting rat corpses in his bag and scrawling a message on the wall in blood.
Greta is forced to admit that the doll she's caring for might be real. Cole thinks the whole thing is ludicrous and smashes Brahms to pieces.
The whole house shakes. Cole hears a strange sound coming from behind the mirror on the wall. As he puts his head close to hear better, the mirror explodes. Cole is blown backward.
A human man emerges from the gaping hole in the wall. His hair is disheveled, his beard is fully grown, and he's wearing a mask that looks eerily like the porcelain Brahms's face. That's the thing, though: this man is Brahms.