In a world where magic has gone mainstream, a policewoman and a group of petty criminals are pulled into a heist to find a forbidden book of spells that should never be opened.

The secret agents of the Laundry Files novels were unable to stop magic becoming public knowledge - in book one of this new series by Charles Stross, the repercussions of that failure are felt by ordinary people everywhere, as the world slides unknowingly towards occult cataclysm...