"Because if you leave out the whole REAMDE and Xiamen part of the story, this looks very simple. Peter was dealing in drugs or something. He got into business with the wrong people. Those people entered his loft and abducted him and took him away and killed him, and because Zula happened to be there with him, they did the same to her. But that doesn’t fit with this Wallace guy, and it certainly doesn’t fit in with the fact that Zula apparently traced REAMDE to Xiamen at almost exactly the same moment that she and everyone else in the apartment vanished."