It was two minutes after he had found out this fact that the Grand Idea came to Harrison. He saw his way now to a revenge so artistic, so beautifully simple, that it was with some difficulty that he restrained himself from bursting into song. For two pins, he felt, he could have done a cake-walk.

He checked his emotion. He beat it steadily back, and quenched it. When he arrived at Merevale's, he went first to the matron's room. 'Has Venables come back yet?' he asked.

Venables was the head of Merevale's House, captain of the School cricket, wing three-quarter of the School Fifteen, and a great man altogether.

'Yes,' said the matron, 'he came back early this afternoon.'

Harrison knew it. Venables always came back early on the last day of the holidays.

'He was upstairs a short while ago,' continued the matron. 'He was putting his study tidy.'

Harrison knew it. Venables always put his study tidy on the last day of the holidays. He took a keen and perfectly justifiable pride in his study, which was the most luxurious in the House.

'Is he there now?' asked Harrison.

'No. He has gone over to see the Headmaster.'

'Thanks,' said Harrison, 'it doesn't matter. It wasn't anything important.'