“The end is dark to me also, but I have hold of one idea which may lead us far. The man met his death elsewhere, and his body was on the roof of a carriage.”

“On the roof!”

“Remarkable, is it not? But consider the facts. Is it a coincidence that it is found at the very point where the train pitches and sways as it comes round on the points? Is not that the place where an object upon the roof might be expected to fall off? The points would affect no object inside the train. Either the body fell from the roof, or a very curious coincidence has occurred. But now consider the question of the blood. Of course, there was no bleeding on the line if the body had bled elsewhere. Each fact is suggestive in itself. Together they have a cumulative force.”

“And the ticket, too!” I cried.

“Exactly. We could not explain the absence of a ticket. This would explain it. Everything fits together.”