Cassie had been thinking that "-40" had something to do with time but it was now well past forty-minutes since Billy was taken and they'd found nothing. Perhaps, then, the note meant something else. Cassie shrank down to normal size and moved to the sidewalk so the traffic could begin moving again. People around gave her a wide berth as she looked around blankly, lost in thought. Negative forty. Maybe...
"Teddy!" she called up, "Maybe it's like forty below or something. Underground?"