Monsieur Darzac appears not to mind it much; but in that he is wrong.

I was interested only in the health of Mademoiselle Stangerson, which was daily improving, when something occurred that is even more mysterious than--than the mystery of The Yellow Room!" "Impossible!" I cried, "What could be more mysterious than that ?" "Let us first go back to Monsieur Robert Darzac," said Rouletabille, calming me.

"I have said that everything seems to be pointing against him.

The marks of the neat boots found by Frederic Larsan appear to be really the footprints of Mademoiselle Stangerson's fiance.

The marks made by the bicycle may have been made by his bicycle.