“Thirdly, he is blonde.”

“Well?”

“Then we have only to peruse the passenger-list, and proceed by process of elimination.”

I had that list in my pocket. I took it out and glanced through it. Then I remarked:

“I find that there are only thirteen men on the passenger-list whose names begin with the letter R .”

“Only thirteen?”

“Yes, in the first cabin. And of those thirteen, I find that nine of them are accompanied by women, children or servants. That leaves only four who are traveling alone. First, the Marquis de Raverdan⁠—”

“Secretary to the American Ambassador,” interrupted Miss Nelly. “I know him.”