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A map of the subway

The New York City Subway is an underground transportation system of trains and rails underneath New York City. Ekaterina agent and Clue hunter Alfred Ely Beach began digging the subway in 1869 while searching for a Clue, prompting three other branches of the Cahill family (the Lucian, Janus, and Tomas branches) to dig their own tunnels searching for the Clue.

The Clue Rosemary was hidden in a tunnel in the subway. Lucian operative Irina Spasky found the Clue at some point, and Team Two discovered it during the Clue Hunt.

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