Credited as Jean-Jacques Algernon in the episodes 1&2, Inspecteur Lenormand is actually (and obviously) played by Jean-Claude Brialy which played also the role of Arsène Lupin. In the 3rd episode, Lupin reveals Lenormand was one of his disguises. In the ending credits, J.C Brialy is credited for both Lupin and Lenormand roles.
