Chapter 101
Chapter Characters:
Robert Langdon
Sophie Neveu
Bezu Fache
The Teacher/Sir Leigh Teabing

Chapter Summary:
Back at the Chapter House, Langdon weighs his choices. As Teabing watches, he remembers luring Silas to his death by having Silas tell him he'd received information about S's family's death. Langdon tries to trick Teabing by lying to him, then does trick him by throwing the cryptex into the air after having set the dials to spell out the missing five letter word: apple. This was the "orb" missing from Newton's tomb; the "Rosy flesh and seeded womb" of the verse refers both to the apple's color and seeds, and to the eternal feminine, which is symbolized by the rose.

Teabing falls to the ground, trying to save the keystone (and through it the Grail), only to watch Langdon and Sophie leave with the crucial information as Fache comes in to arrest Teabing.

Chapter Themes:
The human world is encoded with meaning.
The centrality of human relationships, especially male-female relationships.
The power of belief, and the need to believe.

Chapter 102
Chapter Characters:
Bishop Aringarosa
Silas, the albino monk

Chapter Summary:
Silas prays, and hears Bishop Aringarosa speaking, letting him know he'll live.

Chapter Themes:
The power of belief, and the need to believe.

Chapter 103
Chapter Characters:
Bishop Aringarosa
Bezu Fache

Chapter Summary:
Fache mentally reviews Teabing's bugging plan. Bishop Aringarosa recovers, only to see the Teacher exposed. Bishop donates the twenty million, which was supposed to be to pay for the Grail, to the families of the four slain.

Chapter Themes:
The human world is encoded with meaning.
The power of belief, and the need to believe.
The influence of the past upon the present.

Chapter 104
Chapter Characters:
Robert Langdon
Sophie Neveu

Chapter Summary:
Langdon and Sophie go to Rosslyn Chapel just south of Edinburgh, Scotland. The docent greets them. Sophie goes off to look at the Rosslyn code, remembering the first time she'd been shown it, a time when her grandfather wept because he had to leave someone he loved. The docent asks about the rosewood box Langdon is carrying, claiming his grandmother had an identical one. Langdon quizzes the young man about his family, and finds that they were killed in a car accident. On her own, Sophie finds her way to a small house, and her grandmother; the docent is Sophie's younger brother.

Chapter Themes:
The human world is encoded with meaning.
The centrality of human relationships, especially male-female relationships.
The influence of the past upon the present.

Chapter 105
Chapter Characters:
Robert Langdon
Sophie Neveu
Marie Chauvel

Chapter Summary:
Sophie's grandmother, who'd been living under the name Marie Chauvel, explains that Sophie's parents were both descendents from Merovingian families (Mary Magdalene and Jesus's line), and that, after the accident, the grandparents had divided the remaining two children to raise them independently, for their safety. Langdon quizzes Marie about the Grail and finds that it used to be found under the Star of David there at the chapel, which combines the upward and downward triangles (masculine and feminine). Now it is true that:

"The Holy Grail 'neath ancient Roslin waits.
The blade and chalice guarding o'er her gates.
Adorned in masters' loving art, She lies.
She rests at last beneath the starry skies."

Marie counsels Langdon to be patient and he'll eventually figure out where the Grail is.

The chapter ends with Langdon and Sophie kissing, and planning to go to Florence together for a week.

Chapter Themes:
The human world is encoded with meaning.
The centrality of human relationships, especially male-female relationships.
The power of belief,...