Neither could they determine what the other sound was that reached them.

It seemed almost as though the men were scuffing about the ground, and the absurd notion that they had lost something and were seeking it occurred to both.

But to look for anything in the dark when there was a light at hand was too silly, and that explanation was discarded.

For fully ten minutes--it seemed much longer to the shivering pair in the doorway--the motor chugged and the men continued their mysterious occupation.

Amy's teeth were chattering so that Clint squeezed his arm again.