I really love how you have told this, the opposing perspectives of the same situation in Sedra and Blayne. It comes across so well in their conversation, and the more they talk, the more this shadow of the unknown forms, where the reader can clearly see the Blayne in front of them doesn't quite match the way Sedra views him and has to keep reading to find out why. There is a brilliant realism in Sedra's commitment to what she thinks she knows, that paints a much wider pictures of the brothers who take people in and the dynamics between the characters.

The ending is just fantastic, and skillfully written to be read two ways, it mainly feels like Blayne is waiting for the person possessed by the imprisoned, and that person has arrived outside and has just killed Nox. But then Nox dying right after Blayne says about the imprisoned having to go there or die... it plants this little seed of doubt... was it really someone else who turned up and killed Nox...