Angeline Fowl, Artemis Fowl II's mother, contracts a debilitating disease which Artemis cannot heal with his magic (stolen in Artemis Fowl: The Lost Colony). When Captain Holly Short and N˚1 arrive, they identify it as Spelltropy, a fairy disease that can only be cured by the brain fluid of the silky sifaka lemur. However, the lemur is extinct, as Artemis sold it to a group called the "Extinctionists" seven years previously. He tricks Holly into believing she is responsible for Angeline's disease (he believes he infected his mother), and N˚1 sends Artemis and Holly back in time for three days.