"What of it? What do you mean?"

"I suppose there are no great number of points on a system such
as this?"

"No; they are very few."

"And a curve, too. Points, and a curve. By Jove! if it were
only so."

"What is it, Mr. Holmes? Have you a clue?"

"An idea--an indication, no more. But the case certainly grows
in interest. Unique, perfectly unique, and yet why not? I do
not see any indications of bleeding on the line."

"There were hardly any."

"But I understand that there was a considerable wound."

"The bone was crushed, but there was no great external injury."

"And yet one would have expected some bleeding. Would it be
possible for me to inspect the train which contained the
passenger who heard the thud of a fall in the fog?"

"I fear not, Mr. Holmes. The train has been broken up before
now, and the carriages redistributed."

"I can assure you, Mr. Holmes," said Lestrade, "that every