Wherein we infiltrate Trinity (twice), and then finish with a mostly non-sequitur ending.
I've been informed that this is the "worst" of the two possible endings for Emelia's quest, and that which one you get hinges on whether or not you get the Purple Eye during the Baccarat quest. Strangely, getting it results in the worse of the two endings.
For the curious, here's the better ending: https://www.youtube.com/watch?v=UTUioC5PQlk&feature=player_detailpage#t=523s