Today I received a package from Shay Doran (character from the Nightshade book by Andrea Cremer). It was an old book with clues to whatever the secrets his uncle hides in the mansion. Talking about his uncle Bosque, the clues I received mentions Shay's uncle.
Book: "The Stage Reminiscences Of Mrs. Gilbert". (Edited by Charlotte M. Martin)
Here it is the first clue in page #62 and #63: "The end for Bosque. The witches, broke in to a cross and when the union is made it is the end for Bosque"
And here it is the second clue: "Searcher annals reveal Alistair burned."