oldbroad, yes, it is the whole series of games!
My favorite is the first one - but it was only in French - "L’Emerillon: Enquête à la cour d’Aliénor d’Aquitaine".
There is also the second, called 'L'Oricou: Enquête à Paris sous Napoléon', and in English - 'The Vulture. An Investigation Under Napoleonic Rule'.
'Versailles Mysteries' were the third and the fourth chapters.
There is also the fifth, 'Marie-Antoinette and the Independence War', but I have not seen it as it was published only on some strange platform called 'Nintendo DS' or something.