actors' names

I think I've managed to put the actors' names to most of the characters in the film, apart from the lady concierge who gets killed. Also, I don't know who played the OAS character who comes to tell Denise that she has an unpleasant task ahead, also that she must burn the photos of her ex - lover. Answers, please?
Loved the film, it's one of my all - time favourites - must have seen it about thirty times. It's also the Europe I remember from hitchhiking days in the 70s, classy, elegant, exciting. Two small(ish)flaws which sometimes irritate me, which I think the director should have noticed. When Denise is in the Minister's bed and he tells her he's late because of a ministerial crisis, she whispers "crisis? What crisis?" and then, when not receiving an answer, repeats twice "what crisis?" She should have left it after the first query and tried, in a different way, later - any minister worth his salt would have been suspicious at her curiosity. Also,after the jackal's temporary lover, Madame,receives a visit from Lebel, to warn her of the seriousness of her situation, the jackal cheerfully strolls into her house the same evening/following day. Surely they would have the place surrounded in case of just such a visit?
Anyway - apart from nitpicking, I still love it!