As long as he could distinguish Porthos through the darkness, Aramis followed him with his eyes: when he was completely out of sight, he re-entered the yard.

Nothing had stirred in D'Artagnan's apartment.
The _valet_ placed on watch at the door had neither seen any light, nor heard any noise.

Aramis closed his door carefully, sent the lackey to bed, and quickly sought his own.

D'Artagnan really suspected nothing, therefore thought he had gained everything, when he awoke in the morning, about half-past four.

He ran to the window in his shirt.
The window looked out upon the court.