Percy, Annabeth, Jason and Nico uncover a dust covered diary that was written ages ago during the years coming up to the Great Depression and the years during it. But the thing was, it wasn't just a normal diary belonging to a normal girl. It belonged to the most powerful demigod that ever lived. The diary was lost in the Attic. But that wasn't chilling was it? No.. the chilling thing about the diary and everything was that it wasn't just an ordinary diary to write down her day. It was her suicide note.