“One of them is our own official photograph of the prints on the £10,000 cheque,” said Parker. “The other—where did you get this, Bunter? It looks like the same set of prints, but it’s not one of ours.”

“They appeared similar, sir, to my uninstructed eye. I thought it better to place the matter before you.”

“Send Dewsby here,” said the Chief Commissioner.

Dewsby was the head of the fingerprint department, and he had no hesitation at all.

“They are undoubtedly the same prints,” he said.

A light was slowly breaking in on Wimsey.

“Bunter—did these come off that wine-glass?”

“Yes, my lord.”

“But they are Mrs. Forrest’s!”

“So I understood you to say, my lord, and I have filed them under that name.”