Chapters 22, 23, 24 Summary

With the Sister out of his way, Silas is free to look around the Church. He spots what he is looking for, a strip of brass embedded in the church floor. It is called The Rose Line and runs across the church to a large, Egyptian obelisk, then runs up the obelisk. Silas follows the line across the church to the obelisk. At the same time, Bishop Aringarosa' plane is landing in Rome. He thinks about the fact that he would be the most powerful man in all of Christianity if everything goes according to plan in Paris.

Sophie makes her way to the room that houses the Mona Lisa. She doubles back, momentarily, to grab the ultraviolet pen light, just in case her grandfather's message is in invisible ink. When she does, Langdon spots her and asks her if the letters "P...