In The Son of Neptune, Nico appears in the beginning and he talks to Hazel that he's going to see what's going on with his dad, try to help him he also says that he might try to find the Doors of Death. Later in the book, Gaea tells Hazel that she has Nico so Nico probably found the Doors but of course he got captured. What do you think will happen to Nico? Was it true? Do you think they'll find Nico in Rome? How di Nico find the Doors of Death? Is he dead? Do you think he'll later die in the books?