. . "300"^^ . . . . . . . "The Haunted Opera"@en . "The Haunted Opera is a Historical Character Mystery that is part of Marie-Grace and C\u00E9cile's books."@en . "The cover of The Haunted Opera."@en . . "2013"^^ . . . . . . "After the events of C\u00E9cile's Gift"@en . . . . . "February 1854"@en . "The Haunted Opera is a Historical Character Mystery that is part of Marie-Grace and C\u00E9cile's books."@en . "The Haunted Opera"@en . . . . . . "1609580869"^^ . . . . . .