The paintings of white lilies painted by a popular noble painter get damaged at Bath, a famous hot spring in England.  Feeling that he's seen the painting before, William goes to Bath, where he is reunited with Sherlock, who happened to be there to investigate the case.
I do not know who you are,
but how do you know about him--?
Ich weiß nicht, wer Sie sind,
aber woher kennen Sie ihn?
No necesita revelarse,
pero dígame cómo…
J’ignore qui vous êtes,
mais comment le connaissez-vous ?
Não sei quem você é, mas, por favor,
me conte como você sabe...