On a class field trip to Emerson's Bog, Samantha and her friends learn that the rare Big Bog Tree Frog is in trouble. They decide to form a club to help people celebrate the frogs--and their soggy bog, too.

The Green Musketeers want to stop the school from hogging so much energy, but others are determined to stop the project when they learn that making a few changes might mean canceling a big school party.

Stevie, Carole, and Lisa are ecstatic that stable owner Max Regnery III is about to marry. They can't resist being part of things, so they plan a surprise "bridle" shower for the groom-to-be. Some serious business also needs their attention. The girls want stablehand Red to become a certified riding counselor. Maybe that way, he can be in charge of Pine Hollow Stables while Max is honeymooning and he'll get some respect from bossy Veronica diAngelo. It looks as if disaster will strike when both plans are marred by a mix-up that only The Saddle Club could cause!

When Carole Hanson and her father travel to Minnesota to visit relatives, Carole has the perfect assignment to create a family tree. Ever since her mother died, Carole has been curious about that side of the family, especially about an ancestor who journeyed north along the Underground Railroad. Then Carole discovers a secret lurking in her family tree, and she begins to question where she's come from. Do bloodlines matter as much with people as they do with horses? Carole discovers the answer when a dangerous horseback ride threatens the life of one of her relatives.

When Veronica diAngelo, a rider at Pine Hollow Stables, discovers that her stirrup leathers have been cut before an important hunter jumping exhibition, everyone assumes that practical joker Stevie Lake had something to do with it. After all, Stevie recently served her friends pancakes made out of plaster of Paris, and it's a well-known fact that Stevie and the rest of The Saddle Club can't stand snooty Veronica diAngelo. But would Stevie actually try to sabotage another rider -- and risk injuring her valuable Arabian? If Stevie didn't cut Veronica's leathers, then who did? Is it the work of a "witch" at the stable? And will The Saddle Club ever manage to dear Stevie's name?

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