DEMON DJINN RING NO FURTHER A MYSTERY

Bartimaeus shortly overhears Nathaniel's start-title, which drastically lowers Nathaniel's Regulate around him, because demons can then cast counterspells. Issues quickly get from hand and Bartimaeus and Nathaniel come across them selves caught in the course of magical espionage, murder, blackmail, and revolt. Jointly, The 2 of them defeat Lovelace