'You take it for granted I am guilty, sir,' began Jim hotly.

'I say that the circumstances seems to point to it. In the first place, you were in need of money. You admit that?'

'Yes, sir.'

'In the second place,' said the Head slowly, 'in the second place, I am told that you were nowhere to be found in the House at half-past eight on the night of the burglary, when you ought certainly to have been in your study at your work.'

Bombshell number two, and a worse one than the first. For the moment Jim's head swam. If he had been asked just then in so many words where he had been at that time, it is likely that he would have admitted everything. By some miracle the Head did not press his point.

'You may go now, Thomson,' he said. 'I should like to see you after morning school on Monday. Good-night.'

'Good-night, sir,' said Jim, and went without another word. Coming so soon after the exertion and strain of the mile, this shock made him feel sick and dizzy.

When he had gone, the Head turned to Mr Thompson with a worried look on his face. 'I feel as certain as I do of anything,' he said thoughtfully, 'that that boy is telling the truth. If he had been guilty, he would not have behaved like that. I feel sure of it.'

Mr Thompson looked equally thoughtful. 'The circumstances are certainly very suspicious,' he said, echoing the Head's own words. 'I wish I could think he was innocent, but I am bound to say I do not. I regard the evidence as conclusive.'

'Circumstantial evidence is proverbially uncertain, Mr Thompson. That is principally the reason why I was so bent on making him confess if he had anything to confess. I can't expel a boy and ruin his whole career on mere suspicion. The matter must be proved, doubly proved, and even then I should feel uneasy until he owned himself guilty. It is a most unpleasant affair, a terrible affair.'