Dragon Age: Inquisition - The Winter Palace Assassin 

FINALLY FOUND THIS VARIANT OF "The Lie in Which You Linger"!.

I remember that I hated the winterpalace quest when I fist played it. But after I played it again a year ago, I absolutely love this quest now

Epic ending for an awesome quest!

Not really fitting for the Grand Duchess compared to Corypheus, imho. Sounds like an oh shit it's the end of the world as we fight this final boss. Which doesn't fit the scenario you fight the Grand Duchess. Corypheus literally tears open the sky a second time during your fight with him.