Eleven-year-old twins Myles and Beckett Fowl enjoy adventure and mayhem while helping a troll escape nefarious forces that want his magic.

Sir Gavin embarks on a quest to save the castle from the wizard Morax and his army of trolls.

Jack, Red, and Anansi rescue a lost troll child that was captured as a spy, but what they find out when they return it to Troll Mountain changes everything they have ever known.

Mayor Fitch has Tale Town on lockdown as he prepares for war with the trolls, for whose magic he will risk everything, but Red, Jack, and the other children are determined reveal the truth.

Hedgie, the hedgehog, helps Henny, the speckled hen, trick the Tomten who has been eating all of Henny's eggs for breakfast.

Bera doesn't ask for much in life. She's a solitary, humble troll, tending her island pumpkin patch in cheerful isolation. She isn't looking for any trouble. But when trouble comes to find her, it comes in spades. A human baby has arrived in the realm of the trolls, and nobody knows where it came from, but Bera seems to be the only person who doesn't want it dead. There's nothing to it but to return the adorable little thing to its parents. Like it...