Loyalties are tested and secrets are revealed in this third book of the epic animal adventure series set in the subway tunnels of Brooklyn, ideal for “fans of Erin Hunter, Brian Jaques, and Kathryn Lasky” (School Library Journal).

Felina the cat queen may be gone, but the subway tunnels of Atlantia are still dangerous to all rodents who dwell within the twists and turns. Pup and his spider companion Hacklemesh are lurking in the shadows...

Hopper is determined to reach out to his brother-gone-bad, to see if he can talk some sense into the young rodent. But then Hope, the youngest of Zucker and Firren’s new litter, goes missing, and all signs point to Pup as culprit.

Meanwhile, Firren is rattled not only by the disappearance of her daughter, but a shameful secret from her past that she’s kept hidden for years. A secret that may hold damaging consequences for not only Firren, but all of Atlantia.

How can Pup betray his brother like this? What exactly is Firren hiding?

And will the tunnels ever be the same again?

Lisa Fiedler is the author of many novels for children and young adults. She divides her time between Connecticut and the Rhode Island seashore, where she lives happily with her very patient husband, her brilliant and beloved daughter, and their two incredibly spoiled golden retrievers.

Vivienne To has illustrated several books, including The Underland Chronicles by Suzanne Collins and the Randi Rhodes, Ninja Detective series by Octavia Spencer. As a child, she had two pet mice escape. She currently lives in Sydney, Australia, with her partner and her ginger cat. Visit her at VivienneTo.com.