"We'll have to wipe down the doorknobs. Anything else either of us touched," he says. "The breaker I had you flip. No prints left behind, that's the most important thing. The shell casings are fine, this isn't my service weapon, it won't be connected back to me."

But no prints, that's the most important thing. He has to wipe Karen's presence entirely from this place, scrub it out of every possible corner. As far as he can remember, she had only touched the breaker switch, but he still takes his time, pausing at each set of boxes they might have taken cover at, rubbing down the edges where they may have rested their hands with a handkerchief from his pocket.