"It's the fourth bone-breaking, wise-cracking, spine tingling comic Skulduggery Pleasant adventure only Skulduggery Pleasant himself is lost on the other side of a portal, with only some evil gods for company. Can he possible survive? (Yes, all right, he's already dead. But still.) Skulduggery Pleasant is gone, sucked into a parallel dimension overrun by the Faceless Ones. If his bones haven't already been turned to dust, chances are he's insane, driven out of his mind by the horror of the ancient gods. There is no official, Sanctuary-approved rescue mission."