•
Nina: A third child who is taken by the Population Police after being betrayed. Her real name is Elodie Luria. •
Matthias: The oldest of the three children (10 years old). Nina must decide whether or not to betray him. He is the leader of the trio and will protect Percy and Alia no matter the cost, so is the least willing to trust Nina. He and his friends have lived on the streets under the care of a priest for most of their lives and have been taught the necessary skills to survive as illegal children. •
Percy: The smartest of the three children that Nina meets in her imprisonment. He is reserved and looks to Matthias for guidance. He is nine years old. •
Alia: The youngest child of the trio Nina meets (6 years old). Despite her age, she is instinctively able to adapt to situations and is extremely observant, allowing her to discern situations much better than Nina or Matthias. She seems to trust Nina the most.
Other characters •
Lee Grant: A student at Hendricks School for Boys and the son of the Grant family, powerful and influential Barons. In actuality, he is the third child Luke Garner, the protagonist of
Among the Hidden and
Among the Impostors. •
Trey: A friend of Lee Grant, who helps him tend the outdoor garden at Hendricks School for Boys. He is extremely knowledgeable with scholarly and academic subjects as a result of doing nothing but reading when he lived in hiding as a third child. •
The Hating Man: Nina's interrogator and jailer from the Population Police. He is revealed to be Mr. Talbot, a double agent who wanted to test if Nina was an agent of the Population Police or genuinely innocent. •
Mr. Hendricks: The headmaster of Hendricks School for Boys and Harlow's School for Girls, boarding schools designed to allow third children to live outside of hiding. •
Jason Barstow: Population Police agent, who attempted to betray Lee Grant and other possible third children at the Hendricks and Harlow schools. He was loved by Nina, who feels the greatest amount of betrayal when she is mistaken as his accomplice. ==References==