Chaff

 was a nurse. He caught the eye of Zara. He didn't want to go into the family business because he wanted some human contact. He later applied to train as a Doctor but slept around with other students. He described how an accident could lead to a good thing. Zara and Abby manipulated him so that (AUDIO: The Ward)

Pool later came to them when they were both ill. (AUDIO: The Dance)