The group was out collecting plants for their experiment, tasked with gathering as many specimens as possible. Jack walked alongside Selena, his mind clouded with confusion. He had tried to speak to her earlier that morning, but she had avoided him—completely ignoring his attempts to talk.

What happened? he wondered. We were fine last night.

But then he remembered something that unsettled him—he had seen Mia leaving Selena’s tent late at night. Did she say something to her?

“Did you ...