Boardgamegeek https://boardgamegeek.com/boardgameexpansion/241533/mansions-madness-second-edition-sanctum-twilight
English - Within the lavish rooms of the Silver Twilight Lodge, the most influential citizens of Arkham gather to forge business alliances, plan parades, and lobby politicians. In secret, they also meet to enact forbidden rituals with dark consequences. The poor souls who discover this truth often vanish, never to be seen again.
Ludovox http://ludovox.fr/jeu-de-societe/les-demeures-de-lepouvante-le-sanctuaire-du-crepuscule/
French - Affrontez la Loge de l'Ordre du Crépuscule d'Argent dans cette extension des Demeures de l'Epouvante.