ET), given that the show has been canceled.
I think we burned briefly but brightly, he tells EW.
Some really smart people put their heads together and came up with something different.

Credit: Michael Desmond/NBC
NBC was very brave to make it and very supportive while we were on.
Hes proud of tonights episode.
We left nothing off the table.
It feels like a real ending.
Nobody whos watched the show is going to come up and want their money back in the street.
Neither Isaacs nor creator Kyle Killen will tease too much about the final hour for fear of spoiling it.
Isaacs says he hasnt even told his wife how it ends.
And shes been withholding privileges to attempt to get the answer, he jokes.
One thing Isaacs will confirm: One of those worlds is a dream, he says.
Its not a rip in the fabric of time.
Its not string theory.
It is a man who is teetering under the weight of this psychological denial.
Will we find out which world is real?
The episode certainly feeds one of those theories, says Killen.
Though, of course, it may not be thefinalanswer.
Its a really satisfying conclusion, and I think it will be a satisfying way to leave the show.
Theres so many things aligned against you.
Another connection doesnt want damaged goods from a competitor.
So its sort of worse than starting from scratch, he says.
This very tenuous hold that Brittens had on his sanity all this time begins to fray.
Hopefully, your brains and hearts will hurt.
Killen will join EW.com for a live chat during the East Coast airing tonight to answer fans burning questions.
In the meantime, we asked Isaacs to answer three of ours…
1.
Will we have time for a shirtless scene in the final hour?Yes!
That gunshot wound to the abdomen will need treatment, so Michaels shirt will come off.
No worries, well always remember the episode in which Michael and Hannah went skinny-dipping fondly.
I said, Its completely different.
She said, I can see your butt crack.
I thought they were going to have to withdrawal the footage.
Im glad that some of it ended up in the episode.
I knew that I had to wake up and realize Id killed my son, Isaacs says.
The crew, we all got on very well.
They all read the script and knew what was going on.
We did it three or four times.
It was completely different each time, and I had no idea which take she would use.
Ive had some friends who lost children.
Why does Britten carry that large notepad?If you noticed it, Isaacs is thrilled.
The producers hate me for it, he says, with a laugh.
I went out with homicide cops and they carry these giant pads all the time.
Even when you chase people down the street?
I think it ruined the line of Steves suit, Isaacs cracks.