- Thief II: The Metal Age Collection - Missions  
This is an overview over the Mission "Masks" in the game "Thief II: The Metal Age" by Looking Glass Studios at

Thief II: The Metal Age; Mission: Masks


Now that you know the security system of the Mansion by heart, it is time to get the Masks from the Gervaisius' Mansion. This time, it does not matter at all if they see you or not.