“I don't know; I didn't see it again.”

Inspector Dunbar nodded rapidly.

“Have you ever driven women to or from this Nurse Proctor's before?”

“On two other occasions, I have driven ladies who came from there. I knew they came from there, because it got about amongst us that the tall woman in nurse's uniform who accompanied them was Nurse Proctor.”

“You mean that you didn't take these women actually from the door of the house in Gillingham Street, but from somewhere adjacent?”

“Yes; they never take a cab from the door. They always walk to the corner of the street with a nurse, and a porter belonging to the house brings their luggage along.”

“The idea is secrecy?”

“No doubt. But as I have said, the word was passed round.”

“Did you know either of these other women?”

“No; but they were obviously members of good society.”