I compliment you.

If we do not know yet how the murderer succeeded in getting away, we can at any rate see how he came in and committed the robbery.

But what did he steal ?" "Something very valuable," replied the young reporter.
At that moment we heard a cry from the laboratory.

We rushed in and found Monsieur Stangerson, his eyes haggard, his limbs trembling, pointing to a sort of bookcase which he had opened, and which, we saw, was empty.

At the same instant he sank into the large armchair that was placed before the desk and groaned, the tears rolling down his cheeks, "I have been robbed again! For God's sake, do not say a word of this to my daughter.