However, I intend to follow up the clue of your photograph, though if the explanation I suggest is the true one, there's nothing more to be said.

But the girl, Susan Grant, has not the look of a thief." "That means, I gave her the photograph," said Cuthbert haughtily.
"Not necessarily," rejoined Jennings, putting on his overcoat.

"But I will not theorize any more.

Wait till I confront the girl with you in a few days.

Then we may force her to speak." Cuthbert shrugged his shoulders.