Visible crew/equipment: When Alba says "He's in this room" books start flying off the shelves. You can see the device used to push the books off the shelves come forward then be retracted. (00:41:00)
Continuity mistake: A large blue vase in Galba's study keeps moving itself into different positions on the table. Several shots later, it's gone altogether. (00:20:00)
Visible crew/equipment: At the very beginning of the episode, Nero's ghost appears and raises a knife to attack the heroes, the wires used to move the knife across the room are visible most of the time.
