Frey's return to the city of her birth isn't going to be an easy one. She and her love Col must surge on new faces and bodies in order to infiltrate Shreve by dropping from the sky and landing undetected. Frey's sister Rafi -- no longer a twin in features, but still a twin by birth -- is the wild card. Are the sisters on the same side . . . or are they playing to their own agendas?