Skulduggery Pleasant - A Mind Full of Murder

Six years ago, the universe ended. When it restarted, blinking back into existence, it brought with it a darkness that remains hidden from the mortal population. A week ago a masked sorcerer killed one of those mortals. Then he killed another. And another. With their time running out, Skulduggery Pleasant and Valkyrie must work to solve the puzzles the killer leaves behind before more innocents die... 12+