Before I admit that my guess is completely wrong, I want to hear what general observation in Dimchurch has discovered on the subject of this gentleman.

How long has he been here ?" Lucilla did not, at first, appear to be much interested in the purely practical view of the question which I had just placed before her.
"He has been here a week," she answered carelessly.
"Did he come, as I came, over the hills ?" "Yes." "With a guide, of course ?" Lucilla suddenly sat up in her chair.
"With his brother," she said.

"His _twin_ brother, Madame Pratolungo." _I_ sat up in _my_ chair.

The appearance of his twin-brother in the story was a complication in itself.

Two criminals escaped from the Assizes, instead of one! "How did they find their way here ?" I asked next.
"Nobody knows." "Where did they go to, when they got here ?" "To the Cross-Hands--the little public-house in the village.