Translations for intruder in French

Here are paragraphs from public domain books translated:

"Yes," replied the butler, examining the intruder with an air of surprise, "but monsieur le baron does not see people as late as this."	— Oui, répondit le domestique, en examinant cet intrus d’un air étonné, mais M. le baron ne reçoit pas à cette heure-ci.
The Confessions of Arsene Lupin, by Maurice Leblanc	Les Confidences d’Arsène Lupin, de Maurice Leblanc