While working on a project translating letters from sixteenth-century Prague, high school senior Nora Kane discovers her best friend murdered with her boyfriend the apparent killer and is caught up in a dangerous web of secret societies and shadowy conspirators, all searching for a mysterious ancient device purported to allow direct communication with God.
Having experienced compulsive behavior all her life, Lo's symptoms are getting her into trouble when she witnesses a murder while wandering dangerous quarters of Cleveland, Ohio, collecting things that do not belong to her, obsessing about her brother's death.
Tandy Angel is, along with her brothers, a suspect in their parents' murder but having grown up under Malcolm and Maud Angel's perfectionist demands, Tandy decides she must clear the family name no matter what.
Sophomore Frankie starts dating senior Matthew Livingston, but when he refuses to talk about the all-male secret society that he and his friends belong to, Frankie infiltrates the society in order to enliven their mediocre pranks.
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.
When sixteen-year-old Chap is mistaken for a missing boy, he leaves the home where he has been living temporarily and takes on this new identity, not knowing that it is as dangerous and uncertain as the life he has left behind.
After Sophie Winters survives a brutal attack in which her best friend, Mina, is murdered, she sets out to find the killer. At the same time she must prove she is free of her past Oxy addiction and in no way to blame for Mina's death.
Alex Craft knows how to kill someone. And she doesn't feel bad about it. When her older sister, Anna, was murdered three years ago and the killer walked free, Alex uncaged the language she knows best. The language of violence.
In 1942 New York City, fifteen-year-old Iris grieves for her mother who committed suicide and for the loss of her life of privilege, and secretly helps her father with his detective business since he, having lost a leg at Pearl Harbor, struggles to make ends meet.
Best friends Libby Deaton and May Harper invented Princess X when they were in fifth grade, but when the car Libby is in goes off a bridge, she is presumed dead, and the story came to an end--except now, three years later, Princess X is suddenly everywhere, with a whole underground culture focused on a webcomic, and May believes her friend must be alive.
Seventeen-year-old Jazz learned all about being a serial killer from his notorious "Dear Old Dad," but believes he has a conscience that will help fight his own urges and right some of his father's wrongs, so he secretly helps the police apprehend the town's newest murderer, "The Impressionist."
On an island off the south coast of Victorian England, fourteen-year-old Faith investigates the mysterious death of her father, who was involved in a scandal, and discovers a tree that feeds upon lies and gives those who eat its fruit visions of truth.
Told from various viewpoints, Gabie and Drew set out to prove that their missing co-worker Kayla is not dead, and to find her before she is, while the police search for her body and the man who abducted her.
As sixteen-year-old Kippy of Friendship, Wisconsin, reads her best friend Ruth's diary, she is shocked at what she learns and spurred to solve Ruth's murder, certain that the boy who was arrested is innocent.
Adopted by famous Pinkerton Agency Detective Hawking in 1895 New York, fourteen-year-old Carver Young hopes to find his birth father, but when he becomes involved in the pursuit of notorious killer Jack the Ripper, Carver discovers that finding the truth can be worse than ignorance.
After tragic events tear Mickey Bolitar away from his parents, he is forced to live with his estranged Uncle Myron and switch high schools, where he finds both friends and enemies, but when his new new girlfriend, Ashley, vanishes, he follows her trail into a seedy underworld that reveals she is not what she seems to be.
Rescued from the gallows in 1850s London, young orphan and thief Mary Quinn is offered a place at Miss Scrimshaw's Academy for Girls where she is trained to be part of an all-female investigative unit called The Agency and, at age seventeen, she infiltrates a rich merchant's home in hopes of tracing his missing cargo ships.
In 1888 seventeen-year-old Evelyn Fallow, herself disfigured by the phosphorus in the match factory where she worked, has been hired as a maid to Joseph Merrick, the Elephant Man--but when the Jack the Ripper murders begin she and Merrick find themselves haunted by the ghosts of the slain women, and Evelyn is caught up in the mystery of Jack's identity.
After a high-profile art heist of three van Gogh drawings in her home town of Seattle, sixteen-year-old Violet Rossi finds herself in Japan with her artist father, searching for the related van Gogh painting.
In the affluent seaside town of Echo Bay, Massachusetts, mysterious dares sent to three very different girls--loner Sydney Morgan, Caitlin "Angel" Thomas, and beautiful Tenley Reed--threaten both their reputations and their lives.
Sisters Dara and Nick used to be inseparable, but that was before Dara kissed Parker. That was before the accident that left Dara's face scarred. Now the sisters totally estranged. When Dara vanishes on her birthday, Nick thinks Dara is just playing around. But another girl, Madeline Snow, has vanished, too. Nick becomes increasingly convinced that the two disappearances are linked-- and she has to find her sister, before it's too late.
Spending the summers on her family's private island off the coast of Massachusetts with her cousins and a special boy named Gat, teenaged Cadence struggles to remember what happened during her fifteenth summer.