Le Chevalier D'Eon

Le Chevalier D'Eon (2006) is a animation, mystery with 1 season, rated 5.7/10.

Paris, 1742. While investigating the murder of his beautiful sister—Lia—D’Eon uncovers an evil which casts shadows in both the palaces of kings and the dark alleys of Europe. It is a dark and strange power—one which allows Lia’s soul to return from beyond and possess her brother in order to avenge her own death.