Silas Brimstone, the ancient co-owner of the Chalkhill and Brimstone Glue Factory, has found a way to increase his wealth and influence. He’s stolen the Book of Beleth, a necromantic tome that teaches how to call up demons. But what do you do when the demon you’ve called up demands a human sacrifice … or your soul?

Jasper Chalkhill, the perfumed co-owner of the Chalkhill and Brimstone Glue Factory, has so much money he can afford a permanent fine-weather spell on the whole of his country estate. He comes across as a fool, but where would a fool find that sort of money in the first place?

Beleth, Prince of Darkness, ruler of the Realm of Hell, is a living optical illusion, now appearing as one thing, now another. But whatever shape he’s in, Beleth is as dangerous as any living entity can be. As Pyrgus Malvae finds out when he falls into the demon’s clutches.

Lord Hairstreak is a powerful Faerie of the Night. He is involved in important political negotiations with the Purple Emporer about the future of the Faerie Realm.