‘I am greatly alarmed. Our visitor is missing.’

‘Missing? What, Mr. St. Cleeve?’

‘Yes. I was sitting up to finish a cigar, when I thought I heard a noise in this direction. On coming to his room I find he is not there.’

‘Good Heaven! I wonder what has happened!’ she exclaimed, in apparently intense alarm.

‘I wonder,’ said Glanville grimly.

‘Suppose he is a somnambulist! If so, he may have gone out and broken his neck. I have never heard that he is one, but they say that sleeping in strange places disturbs the minds of people who are given to that sort of thing, and provokes them to it.’

‘Unfortunately for your theory his bed has not been touched.’

‘Oh, what then can it be?’

Her brother looked her full in the face. ‘Viviette!’ he said sternly.

She seemed puzzled. ‘Well?’ she replied, in simple tones.