Behind an ordinary residential house was an abandoned parterre where layers upon layers of dead leaves had accumulated. Someone in a crouching position was there on the ground and, with the aid of the dim lighting from the street lamps, was scribbling something onto a piece of paper:

"You're ready to return?"

A broken-down fence formed the boundary of the parterre. Very soon, a piece of paper was slipped into the parterre from the outside of the fence. ...