Harriet Dyer owes a lot to her lawyer father's decision to take up amateur theatre.

"My dad was in the chorus of Oklahoma when I was about three," Dyer tells ABC News.

"And I just thought that that was normal. And all dads were doing musicals."

Dyer (Love Child, Wakefield) and her co-star/husband Patrick Brammall (Offspring, Glitch) are celebrating the season two return of their Binge series Colin From Accounts.

Dyer plays Ashley and Brammall Gordon, described as two single (ish) complex humans brought together by a car accident and an injured dog.

That dog is Colin (or Zak in real life), who is just as laid back behind the scenes as he is on camera.

"He's really chilled out," Dyer says.

Adds Brammall: "He's very much his character."

When season one premiered in December 2022, buses and billboards showed up in capital cities advertising the show.

Binge was clearly keen to push its new delightfully dorky comedy with the unassuming title, a title that at first glance appears so bland it strikes up an element of inquisitiveness.

It worked. The promotion, the curiosity factor and the genuinely funny and heartwarming scenes captivated viewers.

So did the chemistry between the real husband-and-wife duo who star in, wrote and created the series.

People tuned in, with season one becoming the Foxtel Group's most-watched original scripted series of all time.

The series has also travelled to more than 100 countries including the US and UK.

Brammall told ABC News the couple just wrote a show they found funny and thought was good, but had no idea whether it would resonate.

"I remember at the end of season one, we were like 'well, we like it' but you just never know how it's gonna go," he says.

Dyer too is grateful people love it so much at home and abroad.

"The response from the Brits was outrageous," she says.

"They just got so behind it. It was so great.

"We were flattered because we find them the funniest people in the world, I think.

"We find the Brits so funny."

Dyer says the show has also found a captive audience in Ireland. As ABC News has previously reported, the Irish take their humour seriously.

"Someone told me last night that they have a lot of family in Ireland and there's a lot of Irish people who love it," Dyer says.

"And I'm like 'they're even funnier. That's so cool.'"

'Funny, a bit cringe and real'

The series is also critically acclaimed, winning Best Narrative Comedy Series at the 2024 AACTA Awards and a Logie for Most Outstanding Comedy Program, with Dyer and Brammell both winning the Silver Logie for Most Outstanding Actress and Most Outstanding Actor, respectively.

The first three episodes of season two, made available to media, have just as much heart as season one.

And Dyer is hoping episode four sparks conversations between people in relationships, with Brammell describing that episode this way: "It's funny, it's also a bit cringe and it's also real."

That really encapsulates the whole series.

Of the intimate scenes between the real-life couple, Dyer and Brammall have kept that to a minimum and even what you do see is "pretty PG".

Apart from some of the discussions the pair have, there's very little raunch.

"It's not really in the tone of the show," Brammall says.

Dyer says the family show nature of the program was accidental.

"Because we haven't put a lot of sex-sex stuff in, I think it lends itself nicely to a multi-generational view," she says.

"We've had so many people message us and say, I watched this with my grandson, or me and my mum watched this.

A family affair

Colin From Accounts is a real family affair behind the camera too.

Dyer's sister Madeleine directed an episode in season one and has returned to direct an episode in the second season.

"She's a director and I make a TV show, so if I don't help her out, I can't really show up at Christmas, can I?" Dyer joked.

"But thankfully, she's excellent. And she just gets it.

"This show is so tone-dependent and my sister and I have a very similar sensibility.

"We were fed the same diet of television and film growing up… but she's also just extraordinarily talented with lights and cameras and angles."

Brammall says the director's cut in episode six is spot on.

"She just nails it."

Brammall and Dyer also can't wait for the audience to see the final episode in season two of the eight-part series.

"That's a big one.

"I'll be getting on the socials for that one, babe."

Colin From Accounts is streaming on Binge with new episodes released 12pm AEST Thursdays