I completely agree that BC should have been a suspect, or at least a person of interest, from early on. This is why I think it is SO disingenuous for the detectives to say he wasn't a person of interest. Particularly when I don't think anyone would fault them for saying "yeah, we zeroed in on the husband, wouldn't anyone?" But then, they should also continue to look at other people, and they've stated they did not. I think *that* is precisely where they went wrong. Instead, they zeroed in on him, and keep saying things like "it was a safety detail" instead of surveillance of "we would have looked at other people, but they weren't married to her."