Mr.Coulson was still sleeping.

He replaced the letter, pressing down the envelope carefully.
"My friend," he whispered, looking down upon Mr.Coulson's uneasy figure, "on the whole, I have been perhaps a little premature.

I think you had better deliver this document to its proper destination.

If only there was to have been a written answer, we might have met again! It would have been most interesting." He slipped the oilskin case back into the exact position in which he had found it, and watched his companion for several minutes in silence.

Then he went to his dressing bag and from a phial mixed a little draught.
Lifting the sleeping man's head, he forced it down his throat.
"I think," he said, "I think, Mr.Coulson, that you had better wake up." He unlocked the door and resumed his promenade of the deck.