In Iceland, Elf Commissioner Isolda Thorsdóttir is found shot in an elf park. Crime writer Solveig Karlsdóttir and Inspector Finsen discover a terrified girl, Yrsa, holding the murder weapon. As Solveig calms Yrsa, she uncovers the child’s silence, the mother’s secrets, and a lethal clash of elf lore and corporate schemes behind Isolda’s death.