"Are there no scraps of torn clothes, no blood-stains, no traces of murder, nothing of interest ?" "Nothing!" said the inspector.
"But this is very regrettable," said M.Formery.

"Where did she sleep?
Was her bed unmade ?" "Her room is at the top of the house," said the inspector.

"The bed had been slept in, but she does not appear to have taken away any of her clothes." "Extraordinary! This is beginning to look a very complicated business," said M.Formery gravely.
"Perhaps Guerchard will be able to throw a little more light on it," said the Duke.
M.Formery frowned and said, "Yes, yes.

Guerchard is a good assistant in a business like this.

A little visionary, a little fanciful--wrong-headed, in fact; but, after all, he IS Guerchard.