- Walter enters the snake pit that is Fosco's home and the two square off for a showdown.
- Fosco is caught off-guard when Walter reveals his knowledge of the secret political society.
- But Fosco quickly recovers and he and Walter hash out terms.
- Walter will get a full, written confession from Fosco, which he can present to the people needed to restore Laura's identity.
- Fosco also tells Walter where he can go to confirm the date of Laura's infamous journey to London.
- Fosco, meanwhile, gets a free pass out of the country, and gets to keep Walter as a hostage while he's packing and leaving.
- He then gets the chance to duel Walter at some point in the future.
- Walter is sort of ambivalent about the "dueling" part.
- Walter hangs out at Casa de Fosco while Fosco writes letters, orders people around, decides to donate his pets to the zoo, and generally puts on an entertaining performance.