When her prim and proper grandmother shows up with a boisterous new husband, ten-year-old Molly and her mother really dislike him, but after a series of confrontations, they learn to see both him and themselves in a new light.
When nine-year-old Alex and his friend Yasmeen investigate the disappearance of cats in their neighborhood, they stumble onto a larger mystery involving a haunted house and a ghostly cat.
Seven-year-old Tessa and ten-year-old Cammie, the first female president's daughters, investigate when gold is discovered on the White House grounds and Tessa's piggy bank goes missing.
Twelve-year-old Kate has her entire world turned upside-down when she has to move from California to snowy Pennsylvania, where she tries to adjust to a new climate, a new school, and new friends.
Eleven-year-old Dougie, living in California's Calaveras County, teams up with twelve-year-old Varloo, an emissary from a culture living in underground caves, and tries to help her people.
With the help of their rambunctious dog, Hooligan, seven-year-old Tessa and ten-year-old Cammie, daughters of the first female president, investigate when Dorothy's ruby slippers vanish while on loan to the White House.
Dexter's well-ordered life is disrupted by his uneasy interactions with his spontaneous, even zany, fourth-grade teacher Mr. Ditzwinkle and by his mother's campaign for reelection to the town's school board.
After a difficult first week of third grade, Holly begins to adjust to her new school and living in her new stepfather's tiny apartment with his four cats.
