Skulduggery Pleasant: The Faceless Ones (Skulduggery Pleasant #3)

Description

Skulduggery Pleasant: The Faceless Ones is young adult and fantasy novel written by Irish playwright Derek Landy, published in April 2009. It is the third of the Skulduggery Pleasant series and sequel to Skulduggery Pleasant: Playing with Fire.
 
The story follows the sorcerers and detectives Valkyrie Cain and Skulduggery Pleasant and numerous magic-wielding allies as they try to prevent Batu and the Diablerie from using the remains of the Grotesquery and the last teleporter to return the Faceless Ones to the world.