He heard her shake it.

Then he guessed that she fetched a key, for after an interval, which seemed an age, he caught the grating of the wards in the lock.

After that, she was quiet so long, that but for the apprehensions of Basterga's coming, which weighed on his coward soul, he must have gone up in sheer jealousy so see what she was doing.
Not that he distrusted her.

Even while he waited, and while the thing hung in the balance, he smiled to think how cleverly he had contrived it.

On the side of the authorities he would gain favour by delivering the letters: on the other side, if Basterga retained power to harm, it was not he who had taken the letters, nor he who would be exposed to the first blast of vengeance--but the girl.