For several seconds, Langdon stared in wonder at the photograph of Saunière's postscript. P.S. Find Robert Langdon. He felt as if the floor were tilting beneath his feet. Saunière left a postscript with my name on it? In his wildest dreams, Langdon could not fathom why.

"Now do you understand," Sophie said, her eyes urgent, "why Fache ordered you here tonight, and why you are his primary suspect?"

The only thing Langdon understood at the moment was why Fache had looked so smug when Langdon suggested Saunière would have accused his killer by name.

Find Robert Langdon.

"Why would Saunière write this?" Langdon demanded, his confusion now giving way to anger. "Why would I want to kill Jacques Saunière?"

"Fache has yet to uncover a motive, but he has been recording his entire conversation with you tonight in hopes you might reveal one."

Langdon opened his mouth, but still no words came.

"He's fitted with a miniature microphone," Sophie explained. "It's connected to a transmitter in his pocket that radios the signal back to the command post."

"This is impossible," Langdon stammered. "I have an alibi. I went directly back to my hotel after my lecture. You can ask the hotel desk."

"Fache already did. His report shows you retrieving your room key from the concierge at about ten-thirty. Unfortunately, the time of the murder was closer to eleven. You easily could have left your hotel room unseen."

"This is insanity! Fache has no evidence!"

Sophie's eyes widened as if to say: No evidence? "Mr. Langdon, your name is written on the floor beside the body, and Saunière's date book says you were with him at approximately the time of the murder." She paused. "Fache has more than enough evidence to take you into custody for questioning."

Langdon suddenly sensed that he needed a lawyer. "I didn't do this."

Sophie sighed. "This is not American television, Mr. Langdon. In France, the laws protect the police, not criminals. Unfortunately, in this case, there is also the media consideration. Jacques Saunière was a very prominent and well-loved figure in Paris, and his murder will be news in the morning. Fache will be under immediate pressure to make a statement, and he looks a lot better having a suspect in custody already. Whether or not you are guilty, you most certainly will be held by DCPJ until they can figure out what really happened."

Langdon felt like a caged animal. "Why are you telling me all this?"

"Because, Mr. Langdon, I believe you are innocent." Sophie looked away for a moment and then back into his eyes............