I've been thinking about this. I have narrowed down who I think will betray in the final book. At first, I thought Whit might betray but then I thought again. He already joined it once then quit so I highly doubt he will betray again. Then, I don't know why I want a heir to betray, but I do, so I thought Winslow might betray, but he just almost died, soooooo I don't think he will betray. The one who I think will betray is either Heyena, or Colen. I thought this would be cool because here would finally be a rebel in the Blackstar family. But then again, they learned to fight because they lost their mother. The one who betrays will probably be the one we least expect. I also have been rereading Ember Rising and I remember now that there is at least one more heir. A girl, the princess, the sister of Emma. I am wondering what role she will play in he end. Will she be a traitor, or a hero, only Samuel Dale Smith knows. Except for maybe his agent and his fam. Also, thought on Flint's Sword and Fay's Book. I think the sword will kill Morbin and Fay's book will tame the dragons. That's just my personal thoughts.