Thirteen-year-old Jason finds an old postcard at his recently-deceased grandmother's house that leads him on an adventure blending figures from an old, unfinished detective story with his family's past.
In Tarreton, where the rich have all the magic they wish and the poor can barely afford a spell to heat their homes, twelve-year-old Isaveth's father is accused of murdering an influential citizen and Isaveth, aided by eccentric street boy Quiz, tries to solve the magical murder mystery before her father is executed.
Falsely accused of plotting to overthrow King Claudio, scholarly Mangus the magician, along with his street-smart servant boy, Fabrizio, face deadly consequences unless they can track down the real traitor by the stroke of midnight.
In small-town Michigan, twelve-year-old Zoomy and his new friend Lorrol investigate the journal found inside a mysterious box and find family secrets and a more valuable treasure, while a dangerous stranger watches and waits.
Pixie, one of the near-legendary Gray quintuplets of Whidbey Island, finds a body in Useless Bay, and she realizes something sinister is about to rise from the sea and threaten her family and home.
After her friend's mysterious death, Sophie goes to stay with her cousins on the Isle of Skye. And their peculiar ways hide secrets that when revealed could have sinister consequences for Sophie's future.
Lenny and his best-friend Mike investigate rumors of foul-play going on behind Mike's new position as starting catcher for their seventh-grade baseball team, as the former pitcher claims he was framed for theft, which got him kicked off the team last year.
Three beautiful witch sisters--Esme, Katy, and Ronnie--seem to have everything going for them. But two new students change the delicate balance in their high school. First there's Norman who isn't exactly the cutest guy--with his nearly eight foot tall body seemingly a hodgepodge of body parts connected together by bolts. But Esme finds her strangely attracted to him. On the other hand, Zac, who just arrived from the UK, has all the girls tripping over themselves. He's dangerously handsome in every sense of the word, but Norman is the only one who seems to notice that anyone who goes off with Zac alone comes back severely hurt, without their memories, or worse--they don't come back at all.
After Marvin, a beetle, makes a miniature drawing as an eleventh birthday gift for James, a human with whom he shares a house, the two new friends work together to help recover a Durer drawing stolen from the Metropolitan Museum of Art.
In 1968, with the Vietnam War raging, thirteen-year-old Lyza inherits a project from her deceased grandfather, who had been using his knowledge of maps and the geography of Lyza's New Jersey hometown to locate the lost treasure of Captain Kidd.
Although housebound following an eerie accident, teenaged Ryan continues to investigate the strange occurrences in his hometown of Skeleton Creek, recording his findings in a journal and viewing email video clips sent by fellow detective Sarah.
Dana Bellamy searches for the truth behind the fire for which his father is being blamed.
Having finally developed the psychic ability her father has used to provide for them, twelve-year-old Spirit Holden, aided by the ghost of her beloved dog Sky, investigates the mystery of why wild dogs are dying on their remote island.
Moving to inner-city Boston after his parents' divorce, eleven-year-old Nicky struggles to cope with the changes in his life, including acquiring a former guide dog that leads to a mystery for Nicky to solve.
An avid Sherlock Holmes fan, eighth grader Ingrid Levin-Hill is kidnapped while investigating mysterious happenings in her home town.
During the summer before ninth grade, intrepid Gilda Joyce invites herself to the San Francisco mansion of distant cousin Lester Splinter and his thirteen-year-old daughter, where she uses her purported psychic abilities and detective skills to solve the mystery of the mansion's boarded-up tower.
In 1893 New York, thirteen-year-old Maks, a newsboy, teams up with Willa, a homeless girl, to clear his older sister, Emma, from charges that she stole from the brand new Waldorf Hotel, where she works. Includes historical notes.
When seemingly unrelated and strange events start to happen and a precious Vermeer painting disappears, eleven-year-olds Petra and Calder combine their talents to solve an international art scandal.
When seventeen-year-old Cassie, who has a superb ability to read people simply by looking at them, is recruited by the FBI to solve a cold case, she discovers she is one of a number of exceptional teens like herself who have been asked to help in various ways. As she gets to know the others in her program, however, she begins to realize that nothing is what it seems, especially when a killer strikes and pushes the teens to their investigative limits.
Will Halpin has a lot to handle when he transfers from an all-deaf school to a mainstream Pennsylvania high school. Then he solves the mystery of the death of a classmate who is a popular football player.
Lenny Norbeck and his friends The Mikes set out to investigate the suspicious death of a young pitcher at a Phillies game.
After moving from London to what seems like a dull seaside town, twelve-year-old Miranda is recruited by a group of friends from school to help identify and stop the evil that is shadowing Miranda and causing weird events in town.
Seventeen-year-old Evie O'Neill is thrilled when she is exiled from small-town Ohio to New York City in 1926, even when a rash of occult-based murders thrusts Evie and her uncle, curator of The Museum of American Folklore, Superstition, and the Occult, into the thick of the investigation.
Two brothers, sons of an incarcerated gypsy, leave London traveling to an isolated and desolate village, in search of the brutal killer of their sister.
As a sophomore at a secret spy school and the daughter of a former CIA operative, Cammie is sheltered from "normal teenage life" until she meets a local boy while on a class surveillance mission.
Ten people are invited to a lonely mansion on Indian Island by a host who, suprisingly, fails to appear--ten people who have something to hide and something to fear.
After Mickey witnesses his father's death and his mother's admission into rehab, he is sent to live with his estranged uncle and change high schools, but when Mickey's new girlfriend, Ashley, suddenly disappears Mickey refuses to let another person walk out of his life and follows clues that reveal truths about both Ashley and Mickey's father.
Sixteen-year-old Laura, an American living in London, tries to find the person responsible for the death of her younger brother Billy, who has been killed by a terrorist bomb.
When fourteen-year-old Max Cassidy, an escape artist, is visited by a stranger after one of his shows, he learns that his father's supposed death did not occur, and that his mother, who was sent to prison for the crime, is innocent. Given only one clue to the case, Max begins a journey to uncover the truth and find out what tore his family apart.
Outsider Marnie begins reading tea leaves for fun, but when basketball star Matt asks for a reading related to his friend who disappeared, Marnie's readings begin to seem real--and potentially dangerous.
When his father is arrested as a debtor in 1849 London, fourteen-year-old John Huffman must take on unexpected responsibilities, from asking a distant relative for help to determining why people are spying on him and his family.
On a cold winter day in Chicago, Early's father disappeared, and now she, her mother and her brother have been forced to flee their apartment and join the ranks of the homeless--and it is up to Early to hold her family together and solve the mystery surrounding her father.
When hard-boiled, seventeen-year-old private investigator Dalton Rev transfers to Salt River High to solve the case of a dead student, he has his hands full trying to outwit the police, negotiate the school's social hierarchy, and get paid.
While her mother undergoes radical cancer treatment, eleven-year-old Ella stays with her father's mother in Albuquerque, New Mexico, where she learns about grammar and family history, and helps investigate the theft of an extremely rare book from her grandmother's library.
Widge, an orphan boy who has joined William Shakespeare's acting company, begins some investigative snooping when several thefts occur backstage.
On her first day in New York City with her younger brother, Kevin, twelve-year-old Lexi overhears thieves discussing where to hide stolen jewels, and the siblings, along with their aunt's neighbor, Kim Ling, skip day camp to investigate "the crime of the century."
While on a field trip to New York with the rest of her class, Samantha Archer becomes wrapped up in a mystery when someone begins vandalizing New York sightseeing spots.
Craig McElhaney, a young all-star defenseman with the Western Hockey League, decides to investigate when a series of odd incidents threatens to derail his team's chances to make the playoffs.
Famed scientist Dr. Ramachandran is dead, and Ruby Rose's dad is the primary suspect. Ruby sets out on an investigation through the neighborhood of Gardens to clear her father's name.
Miss Marple refuses to take matters at face value when the body of a young woman is found in the colonel's library.
Thea and her dad move from job to job until he finds work at a guest ranch. There Thea makes friends with a local boy named Van and begins training an abused horse living at the ranch. But when Thea uncovers a mystery at the ranch, it forces her to confront the losses in her own past.
A photograph of a missing girl on a milk carton leads Janie on a search for her real identity.
High-schooler Willa has just moved to California with her mother and film director stepfather, and she will be attending a private school--but her real problem is that she keeps seeing things that are not really there, like a dead body in the swimming pool, and her visions may be connected to a serial killer that is stalking young girls in Hollywood.
Fifteen-year-old Colt Shore's life is turned upside-down when he discovers he is the son of two top spies. He quickly becomes an active agent in F.A.L.C.O.N. (the Free Alliance for the Lasting Cooperation of Nations) and is put on a case to protect a famous rock band and find a missing journalist. Before he knows it, Colt is trying to stop a human trafficking ring and save a group of kidnapped teenage girls from their captors.
Thirteen-year-old Charlotte Doyle, the only passenger on a voyage from England to America in 1832, must take serious matters into her own hands when she learns that the captain is murderous.
Xena and Xander Holmes, an American brother and sister living in London for a year, discover that Sherlock Holmes was their great-great-great grandfather when they are inducted into the Society for the Preservation of Famous Detectives and given his unsolved casebook, from which they attempt to solve the case of a famous missing painting.
Catholic-schooled seventh-graders Sophie, Margaret, Rebecca, and Leigh Ann help an elderly neighbor solve a puzzle her father left for her estranged daughter twenty years ago.
Sixteen-year-old Guy Langman, his best friend Anoop, and other members of the school Forensics Club investigate a break-in and a possible murder, which could be connected to the mysterious past of Guy's recently-deceased father.
Moving into an inherited mansion in Maine with their mother and stroke-afflicted father, three siblings uncover a mystery involving hidden passageways, family rivalries, and healing waters.
Filled with guilt over his younger sister's kidnapping, teenaged Fin tries to rescue her and in the process learns about a dark family secret.
At his father's funeral, Edward Michael "Em" Goverton notices armed men have shown up, and these armed men follow him home. Em has discovered a five-hundred-year-old prophecy by Nostradamus, and these armed men work for men who are connected to that prophecy. With only a stranger named Victor and a family friend named Charlotte as allies, Em embarks on a quest to uncover a conspiracy and stop the end of the world.
There are many powerful people along Embassy Row who want Grace to block out all her unpretty thoughts. But Grace will not stop until she finds out who killed her mother and make the killer pay.
The Brain, who considers himself the world's greatest detective, enlists reluctant helper Sheldon McGlone to investigate recent strange events. The answers involve surfing rivals, a weird homeroom teacher, a toothpaste company, and a severed human leg.
Detective Hercule Poirot has a wealth of suspects to choose from when a wealthy American is stabbed to death en route to Paris on the Orient Express.
A murdered teen's experience of her afterlife includes her efforts to have her body found and to provide comfort to her loved ones.
Dylan and his sisters have some ideas about how to make Snowdonia Oasis Auto Marvel into a more profitable business, but it is not until some strange men arrive in their small town of Manod, Wales with valuable paintings, and their father disappears, that they consider turning to crime.