We have spotted our man all right, if we could only lay hands on him; but he has given us the slip for the moment."
"Who is the man?" asked Thorndyke.
The detective looked doubtfully at Thorndyke for some seconds and then said, with evident reluctance: "I suppose there is no harm in telling you—especially as you probably know already"—this with a sly grin; "it's an old crook named Belfield."
"And what is the evidence against him?"
Again the superintendent looked doubtful and again relented.
"Why, the case is as clear as—as cold Scotch," he said (here Thorndyke in illustration of this figure of speech produced a decanter, a syphon and a tumbler, which he pushed towards the officer). "You see, sir, the silly fool went and stuck his sweaty hand on the window; and there we found the marks—four fingers and a thumb, as beautiful prints as you could wish to see. Of course we cut out the piece of glass and took it up to the Finger-print Department; they turned up their files and out came Mr. Belfield's record, with his finger-prints and photograph all complete."
"And the finger-prints on the window-pane were identical with those on the prison form?"
"Identical."
"H'm!" Thorndyke reflected for a while, and
