'No. I—ah—do not.'

'Ah. Pity. Excellent hobby. However—I took a snap-shot of this man to show to somebody who might know him better than I did. This is the photograph. Drunk as a lord, is he not?'

He exhibited a small piece of paper. The Head examined it gravely, and admitted that the subject of the picture did not appear to be ostentatiously sober. The sunlight beat full on his face, which wore the intensely solemn expression of the man who, knowing his own condition, hopes, by means of exemplary conduct, to conceal it from the world. The Head handed the photograph back without further comment.

'I gave the man back his money,' went on Mr Roberts, 'and saw him safely started again, and then I set to work to shadow him. Not a difficult job. He walked very slowly, and for all he seemed to care, the whole of Scotland Yard might have been shadowing him. Went up the street, and after a time turned in at one of the cottages. I marked the place, and went home to develop the photograph. Took it to show the man who looks after the cricket-field.'

'Biffen?'

'Just so, Biffen. Very intelligent man. Given me a good deal of help in one way and another all along. Well, I showed it to him and he said he thought he knew the face. Was almost certain it was one of the men at work on the grounds at the time of the robbery. Showed it to friend of his, the other ground-man. He thought same. That made it as certain as I had any need for. Went off at once to the man's cottage, found him sober, and got the whole thing out of him. But not the cups. He had been meaning to sell them, but had not known where to go. Wanted combination of good price and complete safety. Very hard to find, so had kept cups hidden till further notice.'

Here the Head interrupted.

'And the cups? Where are they?'

'We-e-ll,' said the detective, slowly. 'It is this way. We have only got his word to go on as regards the cups. This man, Stokes, it seems is a notorious poacher. The night after the robbery he took the cups out with him on an expedition in some woods that lie in the direction of Badgwick. I think Badgwick is the name.'

'Badgwick! Not Sir Alfred Venner's woods?'