He turned a glowing face upon Tarling and gripped his chief by the shoulder.
"We've got him!" he said exultantly.

"We've got him as surely as if we had him in the pen!" "What do you mean ?" asked Tarling.
"I'll swear to that thumb-print," replied Whiteside.

"It's identical with the blood mark which was left on Miss Rider's bureau on the night of the murder!" "Are you sure ?" "Absolutely," said Whiteside, speaking quickly.

"Do you see that whorl?
Look at those lineations! They're the same.

I have the original photograph in my pocket somewhere." He searched his pocket-book and brought out a photograph of a thumb-print considerably enlarged.
"Compare them!" cried Whiteside in triumph.