SPOILER ALERT: The following reveals major plot points fromHulus Only Murders in the Buildings fourth season.

Episode 10 shows how he got away with what many thought was a two-person crime.

He knew about the empty apartment from Sazzs script because she wrote a subplot about it.

Selena Gomez and Martin Short in ‘Only Murders in the Building’ Season 4

L-R: Selena Gomez and Martin Short in ‘Only Murders in the Building’Hulu

DEADLINE:Did you know you were the killer when you signed up for the show?

JIN HA:When I was auditioning for it, no.

It was a shock, for sure, but I had no advice from the beginning of production.

‘Only Murders In The Building’ renewed Season 5

Jin Ha as Marshall P. Pope in ‘Only Murders in the Building’ Season 4 Finale (

And I had to keep it a secret because some people on set also didnt want to know.

DEADLINE:How did discovering his true identity change how you played him?

So obviously there is the reality of as an actor Im preparing Okay, what actually occurred?

At the same time, though, thats necessary to prep for my character.

DEADLINE:That makes sense, especially when you realize his nervousness could be attributed to different reasons.

HA:I saw the challenge as an incredible opportunity to play as an actor.

Through Marshall/Rex, I got to do a little bit of everything in one role.

There were stunts, there was prop work, and there were different characters.

But similarly or in addition to that, what helped me was the homework.

[Co-creator] John [Hoffman] told me Marshall/Rex comes from Michigan and has a survivalist background.

I had written about a paragraph each of imagining, what were his firsts of that year?

Like, the first time he went hunting.

I created this whole dramatic background of how he became who he was, and what motivates him.

DEADLINE:What can you share about the props?

Was being a blonde more fun when you had to wear that wig?

I was channeling my best Spicoli with that wig.

I also thought of something to add to your last question.

DEADLINE:Yes, go ahead!

Like Oh, Im familiar with this.

Im sure there was a little overlap from working on that show.

HA:Yeah, the methodology for sure.

DEADLINE:And speaking of physical comedy, how many stunts did you get to do?

Like when you jumped off the wall to get in front of Selena.

HA:That was awesome.

I got to do all the small stunts.

Suo [Liu], who was my stunt person, comes from Cirque du Soleil.

Hes done all of this incredible work and martial arts.

He did the car flip, and jumping over the car.

He actually got lit on fire for that scene, which was incredible.

I had to stop myself from shouting, Parkour!

as I jumped off the wall and over the bed.

It seemed feasible, so thats how we landed on that.

It was delightful, all those years of jumping over chairs for no reason finally paid off.

DEADLINE:Do you have a favorite scene partner from either before or after the big reveal?

And then when Steve and Marty come through the window.

I feel so lucky to have been there and experience that.

A very close second is all the work I got to do with Jane [Lynch].

But even so, it was still incredible, and I feel so grateful.

It was so easy.

Everyones so damn good at their job; I was just trying to keep up.

DEADLINE:Would you want to come back for Season 5?

Is that a possibility?

I would always jump to work with that wonderful showrunner, writer and leader.

That being said, Isnt [Marshall/Rex] dead?

I guess its unclear enough.

I thought he died.

DEADLINE:I did too, but I have to ask.

HA: We could get into a Paul Rudd-pop in tradition and come back with a different dialect.

I am down, just call John for me.

DEADLINE:Will do.

Before you go, I have a Pachinko question for you.

Do you agree with that?

HA:Fingers crossed that Apple TV will let us finish telling our story.

Were still waiting for their decision.

Assuming we get that opportunity, Im really looking forward to Solomon facing the consequences of his actions.

Regarding the end of Season 2, I dont disagree with Michael.

I have more of a bias because I can understand the motivations for his actions and betrayals.

But at the end of the day, he chooses the path of destruction, and knowingly.

I think he felt stuck and that was his only way to pull himself out of the hole.

He did speak from a more compassionate side of himself.

But we havent seen him deal with Abes death yet either; weve seen the moment he finds out.

This interview was edited and condensed for length and clarity.