If I had a technician in my house to service any appliance and he asked for my wifi password so he could upload something to the home office, I'm not proud to admit how easily I'd offer it to him. Suckah. But I think most of us are conditioned to trust people who show up in the expected uniform.
Could BK have engineered a ruse to gain access to 1122? Possible.... but I think we would have heard about more than a handshake. There'd be full-on digital bearhugs.
I think what is most chilling is the confluence.
BK connected with the house, the occupants, one, two, three or four, specifically or generally and the victims probably had no idea whatsoever. You think you're safe. In your own home. In your own bed. Surrounded by other homes and other beds. You have housemates. And a dog on-site. Layers of insulation.
If this were the movie version, the roommates get home, others get home, K and M get home. Routine, if not for the solemn reality K is moving away.... maybe Murphy is let out, then it's up to the third floor. Sending texts, attempting phone calls, laughing and crying about how Texas will try to change their lives....
While X, who doesn't know it yet, will cow to hunger in an hour, perhaps unaware or undecided whether she's hungry enough to bother, probably calculating hunger vs sleep, maybe figuring her next meal for noon, once she awakens...
While, one town over, BK is making decisions of his own. Dark clothing. Mask. Vans. K-bar.
Why this night? Why the K-bar? Why this hour and not any of the other hours?
When he last fueled his Elantra, was he already anticipating this mission, this date, this hour?
When he shopped or TA'd or stayed up ridiculously late making inordinate noise was he working out the details for this night?
What made this night different for him? That he drove to Moscow, circled a bit, three-point turned, parked in the shadows behind and made entry into 1122
4 college coeds who never saw it coming.
For how long did BK know it was, hell yes, it was coming?
Once he decided it was going to happen, is that the moment he quit maintaining the appearance of trying? Did he find it hard to care about his yawning external life? The people, the students, the professors, his schooling, in favor of the titillating one in his head? Is that where he felt most alive, in his head, filling himself with contempt for the boring cast of boring characters with their boring lives?
It's all just so sad... the four young people with lives that should have stretched out, without end, before them, if not for the creature that was just now slipping through their door.
I rather wonder if he chuckles inwardly when he's with his attorneys, knowing they have to pretend they aren't afraid of him.
IMO he's among the lowest of low and his disgusting superiority complex sinks him still lower.
JMO