Fan Casting Lord Carlo Boreal in The Subtle Knife

Carlo Boreal attended Marisa Coulter's cocktail party. He spoke to Lyra Belacqua about the General Oblation Board and Dust. later at the Pitt-Rivers Museum in Will's world, he again met Lyra, who was acting under the false name Lizzie and did not recognise him. He spoke to her about the trepanned skulls and gave her a card, telling her that she could contact him if she wanted to know more.