Horse Camp: A Horse Girl Mystery

NATIONAL BESTSELLER - YEE-HAW! Willa is back in this standalone sequel to Horse Girl. This time, she tackles summer camp, new and old frenemies, and worst yet: a horse that's mysteriously gone missing.

Seventh-grader Willa is head-over-hooves when she finds a secret note inviting her to Juniper Ranch--a sleepaway camp that's all about horses. The camp promises trail rides, horseback swims, and "ghorst" stories, plus tons of new horse-girl and (gasp!) horse-boy friends. Even better? Willa's pals from Oakwood Riding Academy--including her sworn frenemy, Amara--are all coming along for the fun.

But when Willa makes a dangerous mistake and a beloved steed goes missing, everyone at Juniper Ranch is suddenly a suspect. Wills isn't sure who to trust (including herself) as she tries to figure out who's behind the mysterious horsenapping. And where they might be lurking. And just how she'll save her "forever herd" before a frightening storm rolls into camp. Gulp!

Author: Carrie Seim
Publisher: Penguin Workshop
Published: 05/19/2026
Pages: 256
Binding Type: Paperback
Weight: 0.55lbs
Size: 8.20h x 5.50w x 0.80d
ISBN13: 9780593754016
ISBN10: 0593754018
BISAC Categories:
- Juvenile Fiction | Animals | Horses
- Juvenile Fiction | Mysteries & Detective Stories
- Juvenile Fiction | Sports & Recreation | Camping & Outdoor Activities

About the Author
Carrie Seim (she/her) is the author of the acclaimed novel Horse Girl (now translated into four languages) and bestselling adventure series The Flying Flamingo Sisters (hailed by the New York Times as a Best Audiobook for Road Trips with Kids). She grew up in Nebraska and has served as a staff writer for Nickelodeon and YouTube. She's also contributed to the New York Times, the Atlantic, Cosmopolitan, the New York Post, McSweeney's, and Architectural Digest. You can hear her voice in audiobooks, animated series, and commercials--where she's played everything from an evil robot to a sassy pickle. Learn more at carrieseim.com.