“She is perfectly sane, if that is what you mean. I understood from Mrs. Vandemeyer that the girl had been with her on the Lusitania when that ill-fated ship was sunk, and had suffered a severe shock in consequence.”

“We’re on the right track, I think?” Sir James looked round.

“As I said before, I’m a mutt!” returned Julius.

The doctor looked at them all curiously.

“You spoke of wanting a statement from her,” he said. “Supposing she is not able to give one?”

“What? You have just said that she is perfectly sane.”

“So she is. Nevertheless, if you want a statement from her concerning any events prior to May 7, 1915, she will not be able to give it to you.”