the building and the room。〃
〃He had； then； several false keys。 He took the papers to London
to sell the secret； intending； no doubt； to have the plans
themselves back in the safe next morning before they were missed。
While in London on this treasonable mission he met his end。〃
〃How？〃
〃We will suppose that he was travelling back to Woolwich when he
was killed and thrown out of the partment。〃
〃Aldgate； where the body was found； is considerably past the
station London Bridge； which would be his route to Woolwich。〃
〃Many circumstances could be imagined under which he would pass
London Bridge。 There was someone in the carriage； for example；
with whom he was having an absorbing interview。 This interview
led to a violent scene in which he lost his life。 Possibly he
tried to leave the carriage； fell out on the line； and so met his
end。 The other closed the door。 There was a thick fog； and
nothing could be seen。〃
〃No better explanation can be given with our present knowledge；
and yet consider； Sherlock； how much you leave untouched。 We
will suppose； for argument's sake； that young Cadogan West HAD
determined to convey these papers to London。 He would naturally
have made an appointment with the foreign agent and kept his
evening clear。 Instead of that he took two tickets for the
theatre； escorted his fiancee halfway there； and then suddenly
disappeared。〃
〃A blind；〃 said Lestrade； who had sat listening with some
impatience to the conversation。
〃A very singular one。 That is objection No。 1。 Objection No。 2：
We will suppose that he reaches London and sees the foreign
agent