Would he listen to Rischenheim?
No.

The Count of Hentzau did things thoroughly.
"We may as well overhaul him a bit more," said he, and resumed his search.

My hope vanished, for now he was bound to come upon the letter.
Another instant brought him to it.

He snatched the pocketbook, and, motioning impatiently to the man to hold the lantern nearer, he began to examine the contents.

I remember well the look of his face as the fierce white light threw it up against the darkness in its clear pallor and high-bred comeliness, with its curling lips and scornful eyes.