Lumberjanes

"When a teacher at Gotham Academy goes missing, it's up to Olive, Maps, Colton, Pom, and Kyle to figure out what is happening and how to get her back. With only an outdated birthday invitation as the clue, they find themselves in the middle of the woods with no idea of where to start. With the sudden appearance of the Lumberjanes--April, Jo, Mal, Molly, Ripley and Jen--who are on the hunt for their missing Camp Director, all clues point to an abandoned cabin with more secrets than cobwebs"--Amazon.com.