Artemis Fowl Arctic Incident
In Artemis Fowl the Arctic Incident, Artemis makes a deal with the fairies, if he helped them stop whoever was leading the goblins they would help rescue his father from a Russian group. Artemis and his bodyguard, Butler, help the fairies with stopping the goblins who where being lead by the fairy Lieutennent. The fairies keep their promise and go after the Russians. In the end they manage to rescue him.