"You and Hade were fond of the violin, eh?
And for some reason or other you long ago worked up a series of signals on it, as the mind-reader with the guitar-accompanist used to do in the vaudeville shows.

Those discordant phrases he started off with were your signal to come to the rescue.

And you came.

But how did you come?
And how did he go?
Both by the same way, of course.

But--there isn't even a chimney-piece in the room." Once more, Roke grinned broadly.