» Wed Jun 06, 2012 4:09 pm
Etienne doesn't matter to the quest; he is just a captured TG member. Surely you have an autosave to go back on? If not, just kill the guard and the interrogator then search the chest, which holds the dossier on Esbern. After grabbing it and reading it then exiting out of the menu, three Thalmor guards walk in having captured the Bosmer helper guy. You gotta kill them to get the key I believe. Saving the Bosmer has no effect on the story aside from the absence or presence of an unmarked side quest.
If the guards don't carry a key, search the torturer or the interrogator; one has to carry a key.