'I think I may have scared him a little, sir.'

'We must phone to the police-station. Could you describe the man?'

'I think not, sir. It was very dark. And, if I may make the suggestion, it would be better not to inform the police. I have a very poor opinion of these country constables.'

'But we can't have men prowling—'

'If you will permit me, sir. I say—let them prowl. It's the only way to catch them.'

'If you think this sort of thing is likely to happen again I must tell Mr Abney.'

'Pardon me, sir, I think it would be better not. He impresses me as a somewhat nervous gentleman, and it would only disturb him.'

At this moment it suddenly struck me that, in my interest in the mysterious fugitive, I had omitted to notice what was really the most remarkable point in the whole affair. How did White happen to have a revolver at all? I have met many butlers who behaved unexpectedly in their spare time. One I knew played the fiddle; another preached Socialism in Hyde Park. But I had never yet come across a butler who fired pistols.

'What were you doing with a revolver?' I asked.

He hesitated.