Here, you've dropped some of your precious rubbish." Trent stooped forward and picked up what seemed to him at first to be a piece of cardboard from the ground.

He was about to fling it to its owner, when he saw that it was a photograph.

It was the likeness of a girl, a very young girl apparently, for her hair was still down her back and her dress was scarcely of the orthodox length.

It was not particularly well taken, but Trent had never seen anything like it before.

The lips were slightly parted, the deep eyes were brimming with laughter, the pose was full of grace, even though the girl's figure was angular.