I keep thinking back to that press conference where LE said something about watching for what is missing, what should be there but isn’t, etc. I wonder if colleagues or close associates of BK, who may have already thought he was weird or odd, noticed he stopped coming to school or did not return from Thanksgiving break, connected it to these killings, and then tipped LE off. If I felt like my coworker/classmate was a suspicious person, and then suddenly a quadruple homicide occurs 10 minutes away and this person is also missing, it would raise a lot of red flags for me.