Okay, in this book, we have several key players: Robert Langdon, art history buff and conspiracy theory guy, bigtime. Sophie Neveu, cryptologist for the French police dept., and love interest for Langdon. Jacques Neveu, Sophie’s grandfather; member of a secret society that knows the location and exact nature of the Holy Grail; alos curator at the Louvre. Bishop Aringarosa, head of a fairly radical Catholic organization known as Opus Dei; if he doesn’t take some drastic action soon, Opus Dei is doomed. Silas, a big albino guy, member of Opus Dei; will do anything to help save the society; if they can find the Holy Grail, all will be well. Teabing (I forget his first name), a ridiculously wealthy British historian, who has devoted his life to searching for the Grail; he lives in France. Bezu Fache, captain of the French police.
In the very beginning, Jacques Neveu is killed; the manner of murder leaves him about 15 minutes to leave clues for his granddaughter and Langdon to find. For any number of reasons, Fache is convinced that Langdon is the murderer. Sophie Neveu is called on the scene, because of some coded writing that her grandfather left; for some soap-opera reasons, she hasn’t spoken to her grandfather in ten years. So, Fache is determined to capture Langdon, but Sophie is convinced that Langdon is the one who can help her find the real killer, so she helps him escape. Following clues Jacques left, Sophie and Langdon find a device that holds the key to the Grail, but they can’t open it. They flee to the outskirts of France to find Teabing (oh, yeah, his first name is Leigh). Langdon and Teabing have been friends a long time, and Langdon figures that if anyone can help them, Teabing can.
All of this is set against a backdrop of Bishop Aringarosa meeting with the Pope’s guys, and Silas killing people to try to find the Grail. Aringosa and Silas are both taking orders from a guy known in the book only as “The Teacher”.
Teabing flies Sophie and Langdon to England in his private jet, as the search has led them to the tomb of Sir Isaac Newton.
At the tomb of Newton, it is revealed that Teabing is “the Teacher”, i.e. the bad guy; could’ve knocked me over with a feather; I’d been convinced (intentionally so, I believe) that it was Fache). All of this leads Sophie to find her long-lost family, and an affair-to-come between Langdon and Sophie is strongly implied.
It was a neat book, full of neat puzzles and riddles and twists and turns. You should read it. The Catholic church isn’t happy about it, though.