The newly freedEva McCulloch (Efrat Dor), a.k.a.
Mirror Mistress, killed her husband and framedSue Dearbon (Natalie Dreyfuss)for the murder.
The pandemic decided what would be the finale.

Katie Yu/The CW; Inset: Albert L. Ortega/Getty Images
So it was not guaranteed that we would even be able to complete episode 19 in time.
Given that, every season ofThe Flashis like a movie in three acts.
Okay, that’s a good pause point."

Colin Bentley/The CW
Was that split-screen action sequence scripted to look that way, or did that come up in editing?
That was collaboration in action.
I said, “That sounds terrific.

Dean Buscher/The CW
Do you have the footage for that?”
Then he howled with laughter: “Eric, just wait until you see my director’s cut.”
It was this epic journey.
Was there a beat in there that you really loved but had to cut for time?
There’s an additional Sue scene that we just didn’t have the time for that was just terrific.
It just broke my heart because it was just so terrific!
I was really impressed by how you used Eva McCulloch in this back half of the season.
Villain fatigue usually starts to set in with a seasonlong baddie, but that wasn’t the case here.
In fact, I’m dying for more Mirror Mistress.
That’s all on purpose.
I realized the same thing you just said, and I wanted to not follow that same pattern.
That’s why there are two villains, really.
How has this shifted your original plan for wrapping up this arc?
That’s all going to be the same.
Like, can we have a whole bunch of extras running around?
Can we have these big stunt sequences outside that you would usually see in aFlashfinale?
It might be smaller now.
I don’t know.
The other big thing it’s going to then affect is the rest of the shape of season 7.
We actually already started breaking season 7 when this pandemic happened.
So it’s really: How does it affect the top of season 7?
The audience will experience it now a week later.
What’s the one thing in those three episodes you were dying for people to see immediately?
Also, there’s a big guest star from seasons early on inThe Flash.
I wasreallyexcited for people to see that next week and how that ties into what Eva’s doing.
Also, the next episode is an incredibly emotional one, like tears, and I love watching it.
Looking back on the 19 episodes that aired, what are you most proud of?
Not that I don’t love the villains of the past.
I’ve said it before, Zoom is my favorite speedster villain, I love him so much.
I just want to get back at him."
That’s what remains in her story.
We’ve just never seen anything like that.
Yet in doing what she does, she becomes public enemy number one for the Flash.
Oh, I’m also proud of Team Citizen and expanding Iris' story.
I’m an African-American writer-producer, she’s an African-American actress.
We’re bringing an African-American role model and character to life.
That was a high priority to me, to get her more front and center.
That led to the creation, very deliberately, of Team Citizen.
It’s been a delight watching her perform this season.
I hope the audience has enjoyed it as much as I have.
Exactly what you just said.
And you know what?
That’s not going to work good for anybody.