"Then the wound on the temple was not done with the revolver?"

"The paper doesn't say it was, and I don't think it was; because
logically it appears to me that the revolver was used by Mademoiselle
Stangerson against the assassin. Now, what weapon did the murderer
use? The blow on the temple seems to show that the murderer wished
to stun Mademoiselle Stangerson,--after he had unsuccessfully tried
to strangle her. He must have known that the attic was inhabited
by Daddy Jacques, and that was one of the reasons, I think, why he
must have used a quiet weapon,--a life-preserver, or a hammer."

"All that doesn't explain how the murderer got out of The Yellow
Room," I observed.

"Evidently," replied Rouletabille, rising, "and that is what has to
be explained. I am going to the Chateau du Glandier, and have come
to see whether you will go with me."

"I?--"

"Yes, my boy. I want you. The 'Epoque' has definitely entrusted
this case to me, and I must clear it up as quickly as possible."

"But in what way can I be of any use to you?"

"Monsieur Robert Darzac is at the Chateau du Glandier."

"That's true. His despair must be boundless."

"I must have a talk with him."