Mea Culpa is the first episode of Alias to begin the internal, psychological exploration of Arvin Sloane.
The episode also feels positioned at a crossroads point for the first season in terms of where the overarching narrative is going. Everything at this stage is waiting for the next big plot shoe to drop. The Rambaldi mythology, now established, is completely left behind after Time Will Tell brought into play what will become the key text of Alias’ mytharc going forward; the suspicions around Jack being a KGB mole remain hovering in the ether; Will’s investigation into Danny’s death is at the point Will is capable of contextualising everything across the last nine episodes to a tech support guy; and the SD-6 probe into a mole which has circled for the last three episodes remains ongoing. Mea Culpa isn’t quite the episode to pull the trigger on the next stage for all of these plotlines, but it begins the first tentative steps in that direction.