In this pivotal chapter, the narrative takes a dramatic turn with the arrival of a new character who disrupts the existing status quo in the Glade. The chapter begins with the boys going about their daily routines when they hear the familiar sound of the Box ascending. Thomas, along with the others, is filled with anticipation and anxiety as they gather around the Box, wondering who might emerge next. The Box finally opens, and to their astonishment, a girl is revealed, which shocks all the boys, as they have only ever seen boys before.

The girl, who introduces herself as Teresa, is unlike any other Glader. She comes with a strong aura of mystery and a sense of urgency about her. Clenching a note in her hand, her first words send ripples of confusion and concern through the group: she announces that she is the last one to arrive and that everything is going to change. This statement leaves the boys unsettled, as they have been living by certain rules and routines, and the prospect of change is daunting.

As the chapter progresses, it delves into the reactions of the Gladers. Some are intrigued by Teresa, while others are skeptical or even hostile. The dynamics of the group begin to shift as they grapple with this unexpected addition. Teresa's arrival triggers memories and feelings within Thomas, as he feels a strange connection to her, even though he cannot fully explain it.

The tension escalates when the boys demand to know more about Teresa and the message she carries. The note, written in a way that suggests foreboding, hints at the significance of her arrival and the events that are to unfold. Teresa's presence raises questions about the purpose of the Maze and the future of the Gladers. The chapter ends with a cliffhanger, as the Gladers must come to terms with the implications of Teresa's arrival and what it means for their survival. The interplay of emotions—fear, curiosity, and a sense of foreboding—sets the stage for the challenges and revelations that are to come.

This chapter serves as a crucial turning point in the story, emphasizing themes of change, identity, and the unknown. The introduction of Teresa not only adds a new layer to the plot but also deepens the existing relationships among the boys, particularly with Thomas, who feels an inexplicable bond with her. As the Gladers prepare to learn more about the girl and her message, readers are left eager to discover how this new development will impact their quest for freedom and understanding of their circumstances.