Twelve-year-old Cassie Arroyo is a student in Rome, but her life changes when a secret organization, the Hastati, shoots her father--and she learns that she is a member of an ancient bloodline that enables her to use the Spear of Destiny, a legendary object that can alter the future.

Newly arrived in 1892 New England, Abigail Rook becomes assistant to R. F. Jackaby, an investigator of the unexplained with the ability to see supernatural beings, and she helps him delve into a case of serial murder which, Jackaby is convinced, is due to a nonhuman creature.

It's 1911 and the young detectives of Taylor & Rose are turning their talents to espionage. On a case for the mysterious Secret Service Bureau, the daring Miss Sophie Taylor and Miss Lillian Rose must leave London for the boulevards and grand hotels of Paris. But danger lurks beneath the bright lights of the city and intrigue and murder lie in store. As aeroplanes soar in the skies overhead, our heroines will need to put all their spy skills to the...

Thirteen-year-old Sherlock Holmes aficionado Ingrid Levin-Hill tries to clear her grandfather's name when he is accused of murdering an environmental activist found dead on his farm.

When contestants in an escape room challenge start being killed, seventeen-year-old Persey must solve a series of bizarre and gruesome puzzles, riddles, and games to make it out alive. Escape-Capades, Ltd. is part of the wildly popular "escape room" trend. When Persey, along with five other teens, enters the latest escape room game, they're competing for a grand cash prize. But while most escape rooms are about teamwork and collaboration, this one...

"When servant girl Milla witnesses a murder and finds herself caring for the last four dragon eggs, she is forced to keep them secret amidst the growing tensions in the city. But how can Milla and her friends keep the eggs safe when it means endangering everything she's ever loved? Fiery friendships, forgotten family, and the struggle for power collide as Milla's fight to save the dragons leads her to discover her own hidden past."--Book jacket.

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.