Troop 13 Mysteries Books in Order

The Troop 13 Mysteries are Penny Warner's earlier middle grade adventures, built around friendship, outdoor problem-solving, and the kind of camp setting where a rumor can turn into a full-blown treasure hunt by lunch. The books follow Becca and her friends Sierra, CJ, and Jonnie, members of Troop 13, as their scouting trips keep sliding into real mysteries.

These stories lean into action fast.

Warner uses the troop structure well because it naturally puts the girls in places where kids can roam a little, take on challenges, and work as a team. Campgrounds, trails, caves, horses, and Gold Country landmarks all fit the series. The girls are not solving abstract puzzles from a distance. They are climbing, sneaking, searching, and trying to stay one step ahead of pranksters, thieves, or whoever else is making trouble.

California Gold Country gives the books their strongest flavor. Old legends, hidden treasure, rugged terrain, and bits of local history help the mysteries feel a little bigger than everyday school problems. Even when the setup starts with something simple, a clue, a missing animal, a camp rivalry, it quickly opens into a larger adventure.

The tone is brisk and straightforward, aimed at readers who want a real mystery without a lot of heaviness. Warner keeps the stakes clear and the friendships central. Becca and the others each bring something to the group, and the fun comes from watching them act like actual friends while trying to stay brave under pressure.

There is also a nice balance between scouting detail and mystery plotting. The troop setting never feels pasted on. It gives the girls reasons to be where they are, teaches them how to work together, and puts them in spaces where grown-ups are not solving everything for them.

If you like kid sleuth stories with caves, clues, camp energy, and a little Gold Rush atmosphere, Troop 13 is an appealing place to start. The books have the snap of a quick adventure, but they still leave room for teamwork, confidence, and the simple thrill of kids figuring things out for themselves.