'And these documents relate to Mrs. Beaumont? It was really Crashaw whom you saw that night standing on the doorstep of the house in Ashley Street?'

'As to that matter my belief remains unchanged, but neither my inquiries nor their results have any special relation to Crashaw. But my investigations have had a strange issue. I have found out who Mrs. Beaumont is!'

'Who she is? In what way do you mean?'

'I mean that you and I know her better under another name.'

'What name is that?'

'Herbert.'

'Herbert!' Austin repeated the word, dazed with astonishment.

'Yes, Mrs. Herbert of Paul Street, Helen Vaughan of earlier adventures unknown to me. You had reason to recognize the expression of her face; when you go home look at the face in Meyrick's book of horrors, and you will know the sources of your recollection.'

'And you have proof of this?'

'Yes, the best of proof; I have seen Mrs. Beaumont, or shall we say Mrs. Herbert?'