"He called the signalman—Mead—a 'lying young dog,' across the room,
I believe. Now, Mead, what is he like? You have seen him, of course?"

"Yes. He does not impress me favourably. He is glib, ingratiating, and distinctly 'greasy.' He has a ready answer for everything almost before the question is out of your mouth. He has thought of everything."

"And now you are going to tell me something, Louis," said Carrados encouragingly.

Mr. Carlyle laughed a little to cover an involuntary movement of surprise.

"There is a suggestive line that was not touched at the inquiries," he admitted. "Hutchins has been a saving man all his life, and he has received good wages. Among his class he is regarded as wealthy. I daresay that he has five hundred pounds in the bank. He is a widower with one daughter, a very nice-mannered girl of about twenty. Mead is a young man, and he and the girl are sweethearts—have been informally engaged for some time. But old Hutchins would not hear of it; he seems to have taken a dislike to the signalman from the first, and latterly he had forbidden him to come to his house or his daughter to speak to him."

"Excellent, Louis," cried Carrados in great delight. "We shall clear your man in a blaze of red and green lights yet and hang the glib, 'greasy' signalman from his own signal-post."

"It is a significant fact, seriously?"

"It is absolutely convincing."

"It may have been a slip, a mental lapse on Mead's part which he discovered the moment it was too late, and then, being too cowardly to admit his fault, and having so much at stake, he took care to make detection impossible. It may have been that, but my idea is rather that probably it was