Gen flaunts his ingenuity as a thief and relishes the adventure which takes him to a remote temple of the gods where he will attempt to steal a precious stone.

In 1558, while exiled by Queen Mary Tudor to a remote castle known as Perilous Gard, young Kate Sutton becomes involved in a series of mysterious events that lead her to an underground world peopled by Fairy Folkwhose customs are even older than the Druids’ and include human sacrifice.

In an alternate 1914 Europe, fifteen-year-old Austrian Prince Alek, on the run from the Clanker Powers who are attempting to take over the globe using mechanical machinery, forms an uneasy alliance with Deryn who, disguised as a boy to join the British Air Service, is learning to fly genetically-engineered beasts.

Rory, of Boueuxlieu, Louisiana, is spending a year at a London boarding school when she witnesses a murder by a Jack the Ripper copycat and becomes involved with the very unusual investigation.

Sixteen-year-old Thea's mother is sinking deeper into mental illness since her husband was reported missing, presumed dead, during the war, but it is the disappearance of Thea's best friend, Nan, that allies her with Freddy, whose magical abilities are connected with the sinister city's darkest secrets.

In San Diego in 1918, as deadly influenza and World War I take their toll, sixteen-year-old Mary Shelley Black watches desperate mourners flock to séances and spirit photographers for comfort and, despite her scientific leanings, must consider if ghosts are real when her first love, killed in battle, returns.

When she drops out of school and struggles to start a career on Broadway in the fall of 1950, seventeen-year-old Kit Corrigan accepts help from an old family friend, a lawyer said to have ties with the mob, who then asks her to do some favors for him.

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.

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.

In 1845, Sammy, a Chinese American girl, and Annamae, an African American slave girl, disguise themselves as boys and travel on the Oregon Trail to California from Missouri.