In a matter of days, the world will change. Billions of lives will be wiped away in a final, desperate search for the Child of the Faceless Ones - she who is destined to bring about the return of humankind's ancient overlords. To prevent this, Skulduggery Pleasant and Valkyrie Cain have one last - terrible - option...12+ Skulduggery, Valkyrie and Omen return in the 14th and penultimate novel in the internationally bestselling Skulduggery Pleasant series.