Terra is dying, when a strange man in a blue box comes to comfort her. One moment she has no idea who he is, and the next she remembers - she's known the Doctor her whole life. And he's going to make sure she's never alone.
Nightingale is human - or would be, had it not been for the manner of her creation. Genetically engineered and grown to adulthood in a lab, she was created, not born. Why? For the sole purpose of the entertainment of rich men as one of the many Inamoratas in the bordello business . Beautiful, elegant, a superb dancer...