I thought Cassie was very interesting. She's an older monster, one of the oldest, and had to live in isolation due to her abilities. She's terrified by Toby, who has the ability to lift the Veil in addition to being a monster hunter. The Veil is a bit of magic created a long time ago that makes the monsters look human and keeps the vast majority of them from using their powers. It's allowed Cassie to live a normal life, including developing an on-again, off-again romance. Cassie's sections did a good job of expanding the world of GOD'S PLAY and emphasizing the importance of the Veil. They furthered the plot, but were pretty irrelevant to the character section of the novel. It made the separate point of view feel a touch awkward.