Holmes leaned back in his chair with half-closed eyes.

"You must admit, my dear Watson, that the idea of a joke is
impossible. There were grave events afoot, as the sequel showed,
and the coaxing of Scott Eccles to Wisteria Lodge had some
connection with them."

"But what possible connection?"

"Let us take it link by link. There is, on the face of it,
something unnatural about this strange and sudden friendship
between the young Spaniard and Scott Eccles. It was the former
who forced the pace. He called upon Eccles at the other end of
London on the very day after he first met him, and he kept in
close touch with him until he got him down to Esher. Now, what
did he want with Eccles? What could Eccles supply? I see no
charm in the man. He is not particulary intelligent--not a man
likely to be congenial to a quick-witted Latin. Why, then, was he
picked out from all the other people whom Garcia met as
particularly suited to his purpose? Has he any one outstanding
quality? I say that he has. He is the very type of conventional
British respectability, and the very man as a witness to impress
another Briton. You saw yourself how neither of the inspectors
dreamed of questioning his statement, extraordinary as it was."

"But what was he to witness?"

"Nothing, as things turned out, but everything had they gone
another way. That is how I read the matter."