Nan asks Henry about his specific denial.
He shakes his head and says that there's already enough suspicion going around. He was the only other person in the room, so he thought it was natural Nan would suspect him.
Nan explains her encounter with 'herself' earlier as a point of comparison, but Kim doesn't seem worried. She says omens are one thing, but as long as they're alive they have free will. She seems intent on believing it was the hotel trying to get Nan, and that it only looked like her as a means to an end.
In light of whatever just happened, Nan suggests passcodes. But she's not far into explaining her idea when Anderson interrupts.
He asks Nan if she hasn't been paying attention all along.
Look around.
This place knows who we are, where we are.
It's watching right now.
You want to talk trust, he's got a better plan.
Trust no one.