He grunted undecidedly. I felt I had him at a disadvantage, had caught him in the mood of indiscretion; and to tell the truth I was not curious to learn what might have driven a young medical student out of London . I have an imagination. I shrugged my shoulders and turned away. Over the taffrail leant a silent black figure, watching the stars. It was Montgomery’s strange attendant. It looked over its shoulder quickly with my movement, then looked away again.