Sloane shot Jack; Sydney retaliated by shooting Sloane.
Detonating a charge of C-4, Jack trapped Sloane underground for eternity.
VICTOR GARBER:It seemed like a logical way to finish up.

Credit: ABC
That Sydney got rid of Arvin and he got rid of me it was really kind of perfect.
And this was the first moment where he realized that he couldnt do that any longer.
And then the moment shed gone over the hill, he just collapsed.

ABC
He couldnt do it anymore.
It was a very complicated spy story that was really about a family who happened to be spies.
The heart of it was the family.

ABC
We had an incredible bond from the minute we met, and I think that resonated into the show.
So what she took to be really evil actions she came to see as actually really quite loving.
We continued that all the way up to the finale.
I think their relationship felt resonant because it felt real.
And I think thats exactly the sentiment that you want to hear on both sides of that relationship.
What he viewed as this gift just became the ultimate punishment.
So whats the perfect way for Arvin Sloane to die?
There is no perfect way for Arvin Sloane to die.
How does Jack win?
He wins by taking down his chief nemesis, the corrupting force in Sydneys life.
Its a pretty badass line.
GARBER:I liked that Jack was a badass.
Irina didnt make it out of the fight alive.
PINKNER:We explored all of the options [in terms of which characters to kill].
We wanted it to feel much more inevitable and authentic, which was Jack.
So many shows get canceled without a clear plan in mind for how to end the series.
This one had the luxury of knowing it was ending and being in control of the storytelling.
The intercutting of Jack and Sloane and Sydney and Irina just felt so natural.
By making Sloane immortal but letting Jack win, the show split the difference.
And so much of the show was about the intersection of those things.
Even with Dixon coming back and trying to draw her back in and her refusing the offer.
As writers, we imagined he would do this every couple of years.
But it would be her choice, if she did.
It wouldnt be out of a sense of obligation.
The quest for Rambaldi devices for Sloane was sort of: How can you enlist fate on your side?
Is that just circumstance?
The cast cried even more than you did.
GARBER:It was a very emotional day for all of us, Jennifer and I particularly.
Jennifer still wont watch [the finale].
I just actually had dinner with her in London, and we talked about it.
And often when youre doing it, you dont realize how fast its going until its over.
And then you think, Wait a minute, Im not ready for this to be over.