Timberlake portrays one of the former investigators, Steve Deffibaugh, while Ritter plays his partner in the case.

“Justin was reading the scripts.

We always share material and get notes from each other and stuff like that,” Biel explains.

Candy

Justin Timberlake in ‘Candy’.Tina Rowden/Hulu

I said, ‘Oh, I don’t know.

Probably like a local amazing actor from Atlanta.’

‘We don’t have any money left’ was basically the conversation.

Candy

Jessica Biel in ‘Candy’.Tina Rowden/Hulu

And he said, ‘I want to play this part.’

And I said, ‘Yeah.

He goes, ‘No, no.

I want to play this part.'"

“And she goes, ‘I know.

He already called me about it,'” Biel says.

“I’m like, ‘Okay.

Of course you guys are already talking before I even know anything.’

Literally, they started talking and had a creative discussion about what that could mean.

She was excited about the idea.

Nick was excited about the idea.”

According to Biel, Timberlake wasn’t concerned about getting paid for the role.

He did, however, have some prosthetic belly demands.

“We were like, ‘That we can do.'”

Biel adds that her husband and Ritter developed a “bromance” while filming the series.

“Melanie and I laugh about this a lot,” Biel says.

“It’s like dinnertime while we were shooting.

You don’t have a lot of time with your kids.

And Melanie would be doing the same thing, like, ‘Hello.

Can you come join the family?’

And both of them are like, ‘Sorry, sorry, sorry!

I’m texting Jason.

I’m texting Justin.

We’re talking about characters.’

They had this bromance.”

The two had “long conversations” about the story, Lynskey tells EW.

TheYellowjacketsstar reveals Ritter’s cameo also happened by chance.

“It was over Christmastime and we were all texting on a group text,” Lynskey recalls.

Robin was like, ‘Wait a minute.

He looks very period appropriate.’

Lynskey adds, “He loves working, and he was happy to be involved.

And he loved Justin, so that really worked out.”

There was “a lot of improv going on” in those scenes, Biel shares.

“You see their chemistry.

It’s popping off the screen,” Biel adds of Ritter and Timberlake.

“They’re both so funny and really genuinely good at their jobs.

They just made it a lot of fun.

There was a lot of improv going on, which gave me the freedom to improv.”

Biel adds of filming with her husband, “It was fun being an adversary with him.

It was more fun than, I think, being a romantic lead, you know what I mean?

It was more fun to be head to head.

Kind of going at each other was great.”

The finale ofCandypremieres on Hulu May 13 (Friday the 13th).