
Chapter 42, at the Depository Bank of Zurich
Confrontation at the Bank
Sophie and Langdon arrive at the Depository Bank of Zurich. Using the gold key, they gain access to the bank. The bank president, André Vernet, is called. He is shocked to see them and reveals he was a friend of Jacques Saunière. He explains that without a ten-digit account number, the key is useless. Langdon realizes the Fibonacci sequence from the floor is the account number. Sophie corrects him, entering the sequence in order (1123581321), which works. They retrieve a large plastic crate from the vault.