You're starting at the top of a staircase, looking into a hall. You'll see an open door on your right. Walk toward that. Once in the threshold of a room that looks like a theater- once you're in this threshold, turn right back around toward where you came, and you're going to see another door that goes out onto a deck or patio area. Take two steps onto that deck. Once you are just on it, across the threshold, then you are done.