of the garish Italian restaurant.

"Have you had something to eat? Then join me in a coffee and
curacao. Try one of the proprietor's cigars. They are less
poisonous than one would expect. Have you the tools?"

"They are here, in my overcoat."

"Excellent. Let me give you a short sketch of what I have done,
with some indication of what we are about to do. Now it must be
evident to you, Watson, that this young man's body was PLACED on
the roof of the train. That was clear from the instant that I
determined the fact that it was from the roof, and not from a
carriage, that he had fallen."

"Could it not have been dropped from a bridge?"

"I should say it was impossible. If you examine the roofs you
will find that they are slightly rounded, and there is no railing
round them. Therefore, we can say for certain that young Cadogan
West was placed on it."

"How could he be placed there?"

"That was the question which we had to answer. There is only one
possible way. You are aware that the Underground runs clear of
tunnels at some points in the West End. I had a vague memory
that as I have travelled by it I have occasionally seen windows
just above my head. Now, suppose that a train halted under such
a window, would there be any difficulty in laying a body upon the