Zachary "Zach" Goode is first introduced in book two, while he is in 10th grade. Zach is a student at the Blackthorne Institute for Troubled Young Men,and has knowledge of assault rifles(and other guns) and various forms of torture, as implicated by the information shared by Zach in Out of Sight, Out of Time ("Why didn't you let me kill him? That's what we are trained to do"). In the books he is Cammie's main romantic interest, although her feelings towards him are unclear until he kissed her in the main hall at the end of the second book. He is the son of Catherine Goode, who is the leader of a splinter group within the Circle of Cavan that is dedicated to finding/retrieving a list of names of all the key members in the Circle.