The Fowl Twins

* "Like its bestselling progenitors, a nonstop spinoff froth with high-tech, spectacular magic, and silly business."
―Kirkus (starred review)

One week after their eleventh birthday, Artemis Fowl's twin brothers--scientist Myles and force-of-nature Beckett--are left in the care of their house security system (NANNI) for a single night. That is all the time it takes them to befriend a miniature troll who has clawed his way through the earth's crust to the surface. Unfortunately for the troll, he is being chased by a nefarious nobleman and an interrogating nun (who both need the magical creature for their own gain) as well as a fairy trainee who has been assigned to protect him.

The boys and their new troll best friend escape and go on the run. Along the way, they get shot at, kidnapped, buried, arrested, threatened, killed (temporarily), and discover that the strongest bond in the world is not the one forged by covalent electrons in adjacent atoms, but the one that exists between a pair of twins.