The Holy Grail of Eris, Vol. 8 (manga)

According to Scarlett, during the attempted assassination of Crown Princess Cecilia, the earring that pinned the crime on Scarlett was switched out with a fake. And the most likely suspect to have made the fake earring is Scarlett's fan-Aisha Huxley. Connie heads to the Huxley mansion to hear what she has to say, and despite Aisha's best efforts to keep her secrets, she's driven into a corner by the girl-and-ghost duo. At last, the truth about Scarlett's execution ten years ago will be revealed, and the meaning behind Lily's cryptic message shall also come to light.