Devin Kelley’s Shannon Diaz was killed off in season 2.

Now the star is back in a new role, but still romancing Ryan Guzman’s Eddie.

The9-1-1writers weren’t kidding around when they titled this week’s episode “Ghost of a Second Chance.”

9-1-1

Devin Kelley as Shannon in the ‘9-1-1’ season 7 premiere.Disney/Chris Willard

So what inPassionsdoes this all mean?!

ENTERTAINMENT WEEKLY: So how long ago was this return planned?

So it was something I’d been thinking about for a while.

And then I got a call from wardrobe.

I get all the fun facts and all the info from wardrobe.

They know everything first.

And so she spilled the beans.

How did you decide to tackle playing Kim, Devin?

She’s very fancy and very put together.

And I was kind of thinking, Maybe I’ll be the evil twin.

There will be something kind of darker and sinister about her.

Kim is very bubbly.

And so it was fun to play someone who isn’t tethered to a lot of drama….

But then she becomes tethered to it by virtue of getting to know Eddie.

We’re not just going to have a smooth sail.

You’ve seen the cruise ship episodes, come on.

What made thisVertigostory so appealing to you, Tim?

I do think he has a romanticized, idealized version of what their future could have been together.

KELLEY:It’s been fun to play both sides.

I get to cover it all.

And the big difference for me is letting the future, a.k.a.

Kim, be light and optimistic, while also being Shannon.

But a lot of it’s just happening in his head.

And again, I kind of use theVertigoreference.

I mean, it’s dangerous when you silo yourself off into your fantasy world.

You might be hurting people inadvertently, and it starts to become kind of obsession.

I also think it kind of dovetails into what Bobby’s going through at the same time.

It’s basically ghosts from both of their pasts have risen up, but in different ways.

Speaking of, tell us about Malcom-Jamal Warner as Amir?

It’s really a story of does Bobby deserve this second chance?

Does he deserve this new life?

Does he deserve this new family?

And the one thing we had never really touched on before was….

There’s a whole ripple effect of tragedy because of one thing.

What can you tease for Amir’s interaction with Bobby?

And step nine in Alcoholics Anonymous is to make amends to those that you have harmed.

So it’s really a story of Bobby having to take that step.

And it’s not just one step.

He’s going to have to go kind of a distance to give a shot to fulfill that.

9-1-1airs Thursdays at 8 p.m. ET/PT on ABC.