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.
As they were stretching out their arm,
Vermutlich ist er mit seinem Ärmel
an Farbe geraten, als er sich gestreckt hat.
lo que indica que estiró su brazo
para poder pintar los trazos altos.
Sans doute la manche du coupable
tendant le bras au maximum.
Ou seja, ao esticar o braço,