When apprentice librarian Elisabeth is implicated in sabotage that released the library's most dangerous grimoire, she becomes entangled in a centuries-old conspiracy that could mean the end of everything.

Young wizard's apprentice Connwaer travels to the city of Desh to find the source of the malevolent Shadows who are plaguing Wellmet City.

In 1665 London, fourteen-year-old Christopher Rowe, apprentice to an apothecary, and his best friend, Tom, try to uncover the truth behind a mysterious cult, following a trail of puzzles, codes, pranks, and danger toward an unearthly secret with the power to tear the world apart.

"Ten-year-olds Pearl and Ben find excitement in the small town of Buttonville as they encounter otherworldly animals, including a lake monster, during their first official day as apprentices to Dr. Woo, a veterinarian for Imaginary Creatures"

In early twentieth-century New York, Sacha Kessler's ability to see witches earns him an apprenticeship to the police department's star Inquisitor, Maximillian Wolf, to help stop magical crime and, with fellow apprentice Lily Astral, Sacha investigates who is trying to kill Thomas Edison, whose mechanical witch detector that could unleash the worst witch-hunt in American history.

Pulled through a glass that brings him back in time, Septimus Heap becomes the apprentice of an alchemist.

"Ten-year-olds Pearl and Ben continue their apprenticeships at Dr. Woo's Worm Hospital as they travel with Dr. Woo to the Tangled Forest and the Dark Forest in search of a missing unicorn, and learn more about the villainous Maximus Steele"--

"Alice and five other apprentice Readers face the fight of their lives when they are sent into the magical library of a late rival Reader--a library that's still protected by a vicious guardian"--

The continuing adventures of Tom, the seventh son of a seventh son and apprentice to the local Spook, who faces danger and death daily in his job protecting the region from evil.

In their continuing adventures, magician's apprentice Nathaniel, now fourteen years old, and the djinni Bartimaeus travel to Prague to locate the source of a golem's power before it destroys London.