Jace: You know how the bonds of family are, my lady. They cling as tightly as vines. And sometimes, like vines, they cling tightly enough to kill.

Seelie Queen: You would betray your own father for the sake of the Clave?

Jace: Even so, Lady.

Seelie Queen (laughs): Who would have thought, that Valentine's little experiments would turn on him?

Izzy Lightwood: Experiments?

Seelie Queen (to Jace): The Fair Folk are a people of secrets. Our own, and others'. Ask your father, when next you see him, what blood runs in your veins, Jonathan.