Spirit works not just as a follow on from Mea Culpa but as a companion piece of sorts, continuing Alias’ mid-season exploration of its own central morality.
We saw in the previous episode the difficult soul searching experienced by SD-6 head honcho Arvin Sloane when it came to contemplating that Sydney Bristow, a woman he has spent his life deluding himself into believing a surrogate daughter figure, could have betrayed him – and the consequence of potentially having to sanction her murder. Spirit, by the very nature of how Syd gets out of what looked like at the end of Mea Culpa the end of her life as a double agent for the CIA, shifts this moral question over to Syd’s *real* father, and to some degree the mirror image of Sloane – Jack Bristow. In order to save Syd’s life, Jack has to go beyond simply being Sloane’s weapon of murder—as previous episodes have established—into sacrificing the life of an ‘innocent’ man as part of the greater good.
In reality, as Vaughn later reassures Syd once she realises what Jack has done, the sacrificial lamb of Anthony Russek—an SD-6 agent who Jack frames as a mole working for K-Directorate after faking a transmission to them on a mission we saw in Mea Culpa to disguise Syd’s actual transmission to the CIA—was no innocent. “He was an early member of SD-6, he knew he was working for the bad guys”. Russek was culpable in the hidden crimes of SD-6, aware of the Alliance underpinning their ruse of being part of the American intelligence network, and involved in weapons sales used against American interests across the world. “He got what he deserved” Vaughn states, showing that he may not have agreed with Jack’s slippery methods, but from a moral perspective he agrees with the choice Jack made in the heat of the moment. “What would you have done if it had been your daughter, or son, or Danny?” he asks Syd. She has no clear answer.