If "Ichtaca's destination" was the Town Hall:
For some reason, the tunnels connect to a hidden passage in the basement of Arkham's town hall. You find Ichtaca in a dark room, browsing through several maps of the city. "What are you doing here?" she asks accusingly. "No matter. You're here now. Help me read these documents and figure out what is going on here."
The investigator nearest to the Town Hall takes control of the set-aside Ichtaca (The Forgotten Guardian). Remove the remainder of the "e/f" act deck from the game. If another act card is in play, continue playing. Otherwise, proceed to (→R1).
If "Ichtaca's destinations" were Downtown and Rivertown:
Using information from the bank, you track the bidders to a warehouse in Rivertown. Inside, you find a bounty of information about the Eztli relics and Alejandro's expedition.
The investigator nearest to Rivertown takes control of the set‑aside Ichtaca (The Forgotten Guardian). Remove the remainder of the "e/f" act deck from the game. If another act card is in play, continue playing. Otherwise, proceed to (→R1).