Because she is shy and her parents worry that she has an overactive imagination, eleven-year-old Laura cannot ask straightforward questions about the two children she has heard playing in the yard next door.
Nine-year-old Artie Jensen gets help from his new pet Ghost Dog, an invisible pug, after someone steals the valuable baseball card his grandfather gave him.
Sixth grader Jerry discovers two ghostly children, trapped with their mad scientist uncle in the nineteenth-century mansion that was their former home, and sets them free.
While visiting their Aunt Celia in Boston, the five Wynd children are determined to foil the army of ghosts intent on helping an unscrupulous developer acquire some of the best property in the city. Sequel to "The Dragon Circle" and "The Witching Hour.".
Despite a warning from their ghostly friend Alice, the Black Cat Club kids smuggle Belinda's cat Mittens into the museum to see an ancient Egyptian cat mummy, after which the mummy disappears and Mittens undergoes a strange personality change.
