Ava and Lexi, high school seniors and identical twins, created an imaginary triplet, Alicia, to date and dump boys but now they are being stalked and impersonated by the sister they invented and their former dates are turning up dead.

Nineteen-year-old orphan Signa Farrow confronts Death--and her own deathly powers--when she investigates the mysterious murder of a relative at the Thorn Grove estate.

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.

"Em must travel back in time to prevent a catastrophic time machine from ever being invented, while Marina battles to prevent the murder of the boy she loves"--

In 1868, teenaged Sherlock Holmes faces danger in a train station for the dead, a museum of curiousities, and downtown Moscow as he helps his brother, Mycroft, who has been framed for murder

Detectives' Row is full of talented investigators, but Toby Montrose isn't one of them. He's only an assistant at his uncle's detective agency, and he's not sure he's even very good at that. Toby's friend Ivy is the best sleuth around--or at least she thinks so. They both see their chance to prove themselves when the famed Hugh Abernathy announces a contest to choose the World's Greatest Detective. But when what was supposed to be a game turns into...

On holiday with Hazel's father, Daisy and Hazel secretly investigate a murder on the Orient Express, rushing to solve it before another murder occurs, or someone else finds the killer.

"Ava, Caitlin, Mackenzie, Julie, and Parker are all driven to be perfect--no matter the cost. At first the girls think they have nothing in common, until they discover that they all hate the same person: handsome womanizer Nolan Hotchkiss, who's done things to hurt each of them. They come up with the perfect plan to murder Nolan--jokingly, of course. They'd never actually go through with it. But when Nolan turns up dead in the exact way they'd discussed,...

In Riaznin, it is considered an honor for Auraseers like Sonya - girls with a rare form of synesthesia - to serve as the emperor's personal protector, constantly scanning for feelings of malice and bloodlust in the court. But Sonya would rather be free. After the queen's murder and a tragic accident, Sonya is hauled off to the palace to guard a charming yet volatile new ruler. But Sonya's power is reckless and hard to control. She's often carried...

In a world where some people are born with extreme and often-feared skills called Graces, Katsa struggles for redemption from her own horrifying Grace, the Grace of killing, and teams up with another young fighter to save their land from a corrupt king