When farm boy Homer Pudding's explorer-uncle dies and leaves him a droopy dog with a mysterious coin hidden on its collar, it leads him to The City, where they meet Madame La Directeur, the conniving head of the Natural History Museum, who is trying to steal the coin and take Homer's place in a secret society of adventurers.

Growing up in 1943 war-torn England, thirteen-year-old Alice and her older sister Louise are members of a centuries-old spy clan, but when Louise decides to spy for the enemy, their bond is changed forever.

A shy boy's life is sent spiraling into adventure after a fateful day when he discovers a pig in a small hat and returns it to its home at the mysterious Explorers Club.

Natasha Romanov, called the Black Widow, agent of S.H.I.E.L.D, rescues a young girl from Ivan, the man who once trained her as an assassin--and eight years later she is called upon to protect the teenager Ava has become from a threat from the past--and possibly from S.H.I.E.L.D itself.

Known and feared as the White Wolf, Adelina Amouteru and her sister flee Kenettra to find other Young Elites in the hopes of building her own army of allies. But as Adelina's powers (fed only by fear and hate) start to grow beyond her control, she also distrusts her newfound Elite friends. Teren Santoro, leader of the Inquisition, wants her dead. And her former friends, Raffaele and the Dagger Society, want to stop her thirst for vengeance. Adelina...

Sixteen-year-old Calliope Bolan joins a powerful secret society at her new boarding school, hoping to find answers about her mother's death, but she becomes involved in a dangerous campaign for revenge that threatens her new friendships.

Nothing in Owen's life has been right since his father died in prison, accused of a crime Owen is certain he didn't commit. Monroe, the IT guy at school, might finally bring Owen the means to clear his father's name by letting him use an Animus-a device that lets users explore genetic memories buried within their own DNA. During a simulation, Owen comes uncovers the existence of a powerful relic long considered a legend-the Trident of Eden. Now two...

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.

For five hundred years the Jaguar Cup, sacred to the Silver Jaguar Society, was hidden in a cave on the coast of Costa Rica--so when a fake copy shows up on display in America, it is up to José, Anna, and Henry, junior members of the society, to travel to Costa Rica and rescue the real cup from thieves.

The Alden siblings continue their mission to return lost artifacts around the world by visiting the Great Wall of China and an elephant reserve in Thailand, among other sites, but halfway around the world trouble seems closer than ever.