When her family temporarily moves into a luxury apartment building in 1904 Manhattan, eleven-year-old Samantha tries to discover whether a series of mishaps is related to a curse on the building's owner.
In 1765, the arrival of an injured stranger from another tribe, traveling alone and apparently unable to speak, arouses suspicion in Kaya's Nez Percé village. Includes glossary and historical notes on the Nez Percé Indians
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.
In 1776, eleven-year-old Felicity suspects that an amateur naturalist visiting her family's Virginia plantation may actually be a British spy mapping Patriot plantations in advance of British raids. Includes historical information about the Revolutionary War.
In 1826, strange occurrences on eleven-year-old Josefina's New Mexican "rancho" lead the young healer to wonder if old legends of lost treasure and the wandering ghost called La Llorona may be true. Includes a Spanish glossary and historical background information.
While volunteering as a magazine delivery girl in a convalescent hospital during the Second World War, Molly uncovers a mystery involving the theft of rationed food supplies for sale on the black market.
When her family moves to Philadelphia's Society Hill neighborhood in 1866, Addy discovers that her new home holds dangerous secrets--including one connected to the North Carolina plantation she had escaped from only two years earlier. Includes a brief overview of the experiences of African Americans during Reconstruction, the period immediately following the Civil War.
As the war continues into May 1945, eleven-year-old Molly finds herself pulled in many different directions trying to cope with her troubled father's return from war, the abrupt resignation of her favorite Red Cross volunteer, a scrap-paper drive, and a mysterious neighborhood prowler.
In June 1907, twelve-year-old Samantha looks forward to a happy summer with Nellie and her younger sisters at Grandmary's country home in the Adirondacks but a series of mysterious accidents on the property lead Samantha to suspect that someone is deliberately causing trouble.
In 1776, eleven-year-old Felicity runs the household while her mother and siblings are away, but is distracted by her horse's ill health, two strangers in town, and the fear that a box of family heirlooms is haunted. Includes historical information about life in colonial Williamsburg.
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.
After Rebecca meets a new family in her New York City apartment building and helps watch their fussy baby while they are moving in, she becomes convinced that they have been victimized by the kidnappers that have been operating in their neighborhood.
While trying to find a way for her elementary school to help fund the seabird rescue following an oil spill in the San Francisco Bay, Julie investigates the theft of rare guitar. Includes a "Looking Back" essay about benefit concerts in the 1970s.
Eleven-year-old Cécile Rey searches through many corners of 1854 New Orleans seeking a necklace, borrowed from her Tante Tay, that disappeared as she was exiting a crowded showboat. Includes facts about the 1850s.
"Marie-Grace can't wait to begin her journey up the Mississippi River with her father. The steamboat they're traveling on is the biggest and fanciest boat Marie-Grace has ever seen. It's crowded with all sorts of interesting passengers, including Wilhelmina Newman, a girl her age. Wilhelmina is traveling alone, and she's carrying a secret in one of her trunks--clues to hidden Gold Rush treasure. Marie-Grace and Wilhelmina have to unravel the clues...
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.
In 1970's San Francisco, Julie is excited to take care of Ivy's talking parrot while her friend is on vacation, but strange things are happening at Ivy's house and an old friend of Julie may be to blame.
Caroline worries that British spies may be lurking in Sackets Harbor, but when strange things start happening at Abbott's Shipyard Caroline wonders if a spy, either someone she has known all her life or Papa's long-lost friend, is responsible.
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.
Traveling to Paris in 1907 with Grandmary and the Admiral, Samantha and her adopted sister Nellie suspect that someone is trying to harm their beloved grandfather and stop his secret government mission. Includes a glossary of French words and an "Inside Samantha's World" essay about tourism and international tensions in Europe in the early 1900s.