While working as a reporter during her summer vacation in 1935, Kit uncovers a mystery at the Cincinnati Zoo involving suspected break-ins at the monkey house

During a visit to her grandparents' Illinois farm in 1944, ten-year-old Molly tries to prove the innocence of a German-American neighbor whom the FBI suspects of smuggling anti-American propaganda. Includes historical notes about life on the home front in World War II

Kit is visiting Aunt Millie in Mountain Hollow, Kentucky, in 1934. When a professor arrives to study Kentucky mountain traditions, Kit is thrilled to help with her research-until it becomes clear that somebody doesn't want outsiders nosing around. Kit decides to find out who's making trouble, even if it means venturing into Lonesome Hollow in the dark of night. You will love solving the mystery right along with Kit. An illustrated Looking Back section...

When Kirsten's new friend Erik disappears, she has to figure out whether he ran away to get out of some promises he made, or whether something else has happened

During the time of the Revolution, Felicity must figure out who is making false accusations, saying that her father is a traitor and helping the British

In the summer of 1935, twelve-year-old Kit Kittredge's dog Grace mysteriously vanishes and Kit tries to figure out who took her and why. Includes information about pets and dog shows during the Great Depression

When Rebecca attends summer camp in the country because of the spreading polio epidemic in New York City, she is troubled by a bully in her tent and another fellow camper who is strangely secretive

As Cécile exits a crowded showboat after enjoying a lavish Floating Circus, she stumbles-and when she gets up, she realizes that the cameo necklace she borrowed from her aunt is no longer on her neck. Knowing that the necklace was the last gift Tante Tay's husband gave her before he died, Cécile is desperate to find it. As she tracks down the people in the crowd who were near her when she fell, her search takes her into many corners of New Orleans,...

Marie-Grace is excited that a well-known English opera company will perform at the very theater where she takes singing lessons from Aunt Océane, but as she and her friend Cécile help out backstage, the make disturbing discoveries

When Caroline learns that British spies may be lurking in Sackets Harbor, she is worried. Then, a long lost friend of Papa’s shows up in town. Papa is delighted to give him a job at Abbott’s Shipyard, but soon, strange things start going wrong. Caroline is sure a spy is making trouble at the yard--but is it one of Abbott’s trusted workers, whom she has known all her life, or could it be Papa’s dear friend? A Looking Back section discusses...

On a three-day stagecoach ride to the big city of Albany during the War of 1812, eleven-year-old Caroline is fascinated by the other travelers, including a charming magician and a beautiful young woman with a sad past, and when Caroline's important package for her father disappears, she must unmask a thief