The police are on the alert. Vandals are attacking local schools with spray-paint and graffiti. When the gang's next target is Kayo and Rosie's elementary school, the two sixth-grade friends are angry and frightened by the senseless crime. Suddenly one night, the two girls and their canine buddy, Bone Breath, surprise the vandals in action. In the silence, Bone Breath barks. As Kayo and Rosie run, they hear footsteps behind them. A hand reaches out for Rosie.

The Oakwood Doll Museum is one of six-graders Kayo and Rosie's favorite places. After thieves break into it one night, the girls are worried. Are the dolls okay? Is the French musical cat still there? When the girls rush to the site, they see that everything is all right - the police have scared away the burglars. While Kayo and Rosie enjoy the dolls, they hear strange music coming from a locked glass case. The musical cat is playing by itself! Could there be a ghost in the Oakwood Doll Museum?

Sixth-grader Kayo Benton and her friend, Rosie, are busy trying to find a good home for old Mrs. Tallie's cat, Muffin. But when Rosie gets a menacing phone call warning her to stay away from the old woman, the girls begin to realize that it isn't just the cat that needs help.

Sixth-graders Rosie and Kayo have a new Care Club project. They are taking Bone Breath, Rosie's dog, to the Oakwood Nursing Center to visit the residents. Old Mr. Winters is one of the girls' favorite people there, even if he does ramble on about crazy things, like seeing a man with a gun across the street. One night, when Rosie and Kayo watch the evening news, they discover that Mr. Winters isn't so crazy after all. A murder has occurred in the house opposite Oakwood.

Sixth graders Kayo and Rosie are on a motor-home trip with Rosie's parents in the North Cascades National Park. The two girls can't resist a chance to hike high up into the hills, where they sight several bald eagles. But when a poacher nabs one of the baby eaglets from its lofty nest, Kayo and Rosie suddenly find themselves on a dangerous chase that will lead them deep into unfamiliar territory.