"Do you mean driving out the devil by means of a religious ceremony ?" he asked incredulously.
"Yes," said Sir Lyon, "I do exactly mean that.

As you are probably aware, there is a form of exorcism still in common use.

And if I were our host here, I should have Wyndfell Hall exorcised, preferably by a Roman Catholic priest, as soon as Miss Bubbles is safely off the premises." The doctor again looked sharply at the speaker--but no, Sir Lyon evidently meant what he said; and even Varick seemed to be taking the suggestion seriously; for "That's not a bad idea," he muttered.
The three men walked on in silence for a few moments.
"It would be interesting to know," observed Sir Lyon suddenly, "what Miss Farrow conceives to be the truth as to her niece's peculiar gifts.
I fancy, from something she told me the other day, that she hasn't the slightest belief in psychic phenomena, I wonder if she feels the same after what happened yesterday and last night ?" "I can tell you exactly what Miss Farrow thinks," interposed Varick.

"I had a word or two with her about it all this morning, after we'd examined the servants in the white parlour." "What _does_ she think," asked Sir Lyon.

He had always been interested in Blanche Farrow, and, in a way, he was fond of her.
"She thinks," said Varick, a little hesitatingly, "that Bubbles, in addition to her extraordinary thought-reading gift, has inherited from her Indian ancestress a power of collectively hypnotizing an audience--of making people see things that she wants them to see.