After reading three mysteries in a row, Jenny becomes convinced that the neighbors across the street are up to no good and decides to investigate.

Jenny Archer is excited about making a television commercial for a new snack food, until she discovers that the food she liked so much was meant for gerbils.

Follows the comic mishaps of Jenny Archer as she goes into business preparing lunches for friends at school.

When nine-year-old Alex moves to weird California to live with her father for a year, she is plagued by disturbing nightmares and fears her new friends will learn her babyish secret.

Harry and Jill are chosen by a magic talking sword to rescue a damsel from the Bad Wizard in Mandragora, but the damsel is Harry's complacent fat spaniel and she decides she wants to stay in Mandragora.

Convinced that her family is poor because her parents refuse to get her a horse or a swimming pool, nine-year-old Jenny Archer follows her own path to making money, including a plunge into real estate that puts her house on the market.

Stymied by an assignment to write her autobiography, Jenny decides to enhance her life story by using her considerable imagination.