'Certainly; the immediate cause. Heart disease of long standing. Your brother always had a weak heart, my lord.'

'Then in that case Mr. Montagu Babbacombe wasn't the Marquis of Twickenham.'

This was Dr. Clinton. When he spoke, the old gentleman looked at him and knew him.

'Is that you, Clinton? I didn't catch what it was you said.'

Mr. FitzHoward put himself forward before Dr. Clinton had a chance of answering. He handed the old gentleman the photograph.

'May I ask, sir, if you know who is the original of that?'

'Certainly; very well. It's the late Marquis--as I used to know him.'

'That's a portrait of Mr. Montagu Babbacombe, as he appeared on the morning of the day on which the late Marquis is stated to have died.'

'Of whom?'

'Of Mr. Montagu Babbacombe.'