The Dissenters #2: The Shimmers in the Night book by Lydia Millet

Cara's mother is still missing. When her brother Jax texts her from "smart kid's boot camp" in Boston, Cara and her two best friends go to the rescue. But the camp is a front for Cara's mother's organization who are fighting against a force who wants to make the planet over in its own image, which will leave no space for anything else, animal, insect, or human.

A Junior Library Guild Selection.

Lydia Millet is the author of Love in Infant Monkeys and Ghost Lights. She works at an endangered-species protection group. The Shimmers in the Night is the second book in the Dissenters series.