It's summer, and the Weird Sisters are convinced that the residents of Covenly aren't coming to their pet emporium--and newly opened detective agency--because the sisters are too strange. So they decide to let nine-year-old Jessica Nibley teach them how to play on the swing to fit in.They soon discover the town's beloved tire swing lying on the ground with its rope severed. Who would do such a thing? And why? Jessica and the sisters are determined...

"It's autumn, and Covenly residents are gathering at the annual fall fair. The three Weird Sisters--Hildegurp, Glubbifer, and Yuckmina--are running a Flying Broom ride for Covenly kids. Nine-year-old Jessica Nibley is overseeing the petting zoo nearby, which includes Jessica's goat, Leona Swapnik's prized chickens, and bats, spiders, and frogs in fancy clothes from the sisters' pet emporium. When a frog hops out of the noisy petting zoo, the sisters...

"One spring evening, the town of Covenly gains three new residents, whose strangeness makes some of the other citizens uneasy. Hildegurp, Yuckmina, and Glubbifer set up shop, hoping for a fresh start and a new business: a pet store. Their first customer is nine-year-old Jessica Nibley, who has lost her pet goat and hopes the sisters can help track it down. But as they exit the shop, they discover a mangled note with missing pieces that suggests the...