How Henri LaFarge the head butler was killed

I think he was petrified to death. Madame Ballon knew that her husband killed Henri, dragging the body and a gun to Maria's room. M. Ballon either shot Henri in a spot that would petrify him like a statue or found another way to petrify him, as he fell out of Maria's closet when Commissioner Drefyus and Francois found him.

And to add to that, the cook, played by late British actress Vanda Godsell (who also played the overreacting housekeeper of Prof. Hugo Fassbender in Strikes Again), was Madam LaFarge, who claimed Madame Ballon was having affair with Henri, and led to everyone arguing with each other revealing they were the killers. Of course, like before, I don't think that explosion would have killed M. & M. Ballon, or Madam LaFarge, or Maurice the 2nd Butler (who Clouseau obviously dislike), or Simone the 3rd maid, or Pierre the 2nd Chauffeur, not matter what Dreyfus or Clouseau thought, since even Cato has taken that kind of explosion and ended up just in the hospital (for three weeks in Strikes Again)