Kate Box, the actor who auditioned for Deadloch’s wild cop and got the buttoned-up one instead

Kate Box

Photo via The Movie Database (TMDB)

Born	1979 Adelaide, South Australia, Australia
Occupation	Actress
Known for	The Little Death, Runner, Monolith
Awards	2 AACTA · Equity Award, Most Outstanding Performance by an in a Television Movie or Miniseries (shared)

Kate Box has a private method for playing Dulcie Collins, the fastidious senior sergeant at the centre of Deadloch. She reads a scene, pictures the screaming, shouting and tantrum-throwing going on inside the character, and then, as she put it, she will “shut the lid on that and play the professional, straight, repressed version.” The comedy of the show lives in that lid. So does a good part of her career. For two decades Box was the actor Australian television trusted to hold a scene steady while someone louder took the credit, a regular face in legal comedies, prison dramas and period pieces. Then two writers named Kate built a series around a woman who keeps everything in, handed her the lead, and a performer the industry had filed under reliable became the person audiences in several countries came back for.

The part was not even the one she wanted. Box first taped for Eddie Redcliffe, the brash, foul-mouthed detective from Darwin. “Who is this woman? This is a role that I don’t see come across my iPad very often,” she remembered thinking. Before she sent the audition in, the producers asked her to put something down for Dulcie as well. She had fallen for Eddie and had barely read Dulcie’s scenes. The switch gave Deadloch its central double act, with Madeleine Sami as the storm and Box as the woman trying not to react to it.

An Adelaide youth theatre and a circle that stayed together

Box grew up in Colonel Light Gardens, a leafy suburb of Adelaide, where she was born in 1979. Her parents, Greg and Lorraine, were both social workers, and she has a sister, Sally. She went to Annesley College, and at 13 she started classes at Unley Youth Theatre, the company now called Urban Myth. That room turned out to matter more than any drama school. There she met Sophie Hyde and Matthew Cormack, who would go on to found the Adelaide company Closer Productions, and the screenwriter Drew Proffitt. The friendship with Hyde has run through her whole working life and has put her in front of Hyde’s camera more than once.

Acting was not the plan at first. Box enrolled in an arts degree at the University of Adelaide at 17, meaning to major in psychology, and left with politics and Australian studies instead. Only then did she audition for the Victorian College of the Arts and the National Institute of Dramatic Art. NIDA took her, and at 22 she moved to Sydney. She graduated in 2003.

Stage training, then a long apprenticeship on screen

Her first professional role came in 2004, as Helena in A Midsummer Night’s Dream for the Bell Shakespeare Company. The theatre work that followed kept her in serious company: Dolores at the Old Fitzroy Theatre, Macbeth for Sydney Theatre Company, A Christmas Carol at Belvoir. Years later, Caryl Churchill’s Top Girls at Sydney Theatre Company earned her a 2018 Helpmann Award nomination for best supporting actress in a play.

Television came slowly and then all at once. She made her screen debut in the 2005 telefilm Small Claims: White Wedding, and her first feature was The Black Balloon in 2008. Guest spots followed on All Saints, Tripping Over and the children’s series My Place. In 2011 she played Germaine Greer in Paper Giants: The Birth of Cleo, the miniseries about the launch of Cleo magazine. The job that gave her a place in Australian living rooms was Rake, the ABC comedy-drama built around Richard Roxburgh’s self-destructive barrister, where she played Nicole Vargas across all five seasons, from 2010 to 2018. Around it she worked constantly, on Offspring, on the ABC’s Old School as Cath Khoury, and in films such as The Little Death, the ensemble sex comedy that brought her an AACTA nomination for best actress in a leading role, and Simon Stone’s The Daughter.

Riot and the roles she chose to stand behind

The performance Box has called the one she is proudest of came in Riot, the ABC telefilm directed by Jeffrey Walker that aired in February 2018 for the fortieth anniversary of the first Sydney Gay and Lesbian Mardi Gras. She played Marg McMann, one of the activists who marched down Oxford Street in 1978 and were met by police. “I was so grateful to walk with that character for a bit because the courage that she displayed definitely helped me to live my life with more truth and courage,” she said afterwards. The role won her the AACTA Award for best lead actress in a television drama and a Logie nomination for most outstanding actress, and the cast, with Damon Herriman, Xavier Samuel, Jessica De Gouw and Josh Quong Tart, shared an Equity Ensemble Award the following year. Box has said the AACTA mattered because it let her stand front and centre on the rights and acceptance of LGBTQIA+ people.

The same years brought F*!#ing Adelaide, the Closer Productions miniseries about three siblings called home when their mother decides to sell the family house, plus Picnic at Hanging Rock, the third season of Wanted, The Unlisted, the Tim Minchin road comedy Upright and Les Norton, which added another AACTA nomination. In 2020 she joined Stateless, the detention-centre drama produced by Cate Blanchett, and walked into the final season of Wentworth as Lou Kelly, a new inmate who arrived late in the show’s life and quickly became one of its fan favourites.

The problem with being the reliable one

A career like this can be read two ways. One version is a steady ascent. The other is less flattering to the industry: an actor with serious stage training and a leading-actress nomination by 2015 still spent most of the following decade in supporting, guest and ensemble slots, and did not carry a series until her forties. Box herself has put her finger on a related gap. In a 2020 interview with The Sydney Morning Herald she observed that queer actors playing queer roles was still a rare thing, and in 2023 she told the same paper that although she had never been a closeted actor, there had been an instinct to hide. Her most celebrated characters, Marg McMann, Lou Kelly and Dulcie Collins, are all queer women, played by an openly gay actor, which is the very combination she described as rare. When she won the AACTA for best acting in a comedy in February 2024, she used her speech to say “we are the stories we tell and the ones we don’t” and to call for a ceasefire in Gaza. The clip spread widely over the following days, and it fixed an image of her that the buttoned-up Dulcie does not suggest: an actor who says the thing out loud.

Deadloch and the lid that holds the show together

Deadloch, created by Kate McCartney and Kate McLennan, arrived on Prime Video in June 2023. Its first season dropped a body on the beach of a small Tasmanian town in the middle of its Winter Feastival and forced two detectives to share the case. Dulcie is a former detective who stepped down to run the local station at the wish of her wife, Cath, played by Alicia Gardiner; Eddie is everything she is not. Box prepared the way she usually does. “I’m a big fan of writing personal history for characters, so I have notebooks filled with imagined events that had happened to Dulcie in her life,” she has said. The series won five AACTA Awards, including hers in the new category of best acting in a comedy, and brought Logie nominations for best lead actress in a comedy in 2024 and again in 2026, when the award went to Celia Pacquola for Dog Park.

The second season premiered on 20 March 2026 and moved the pair to Eddie’s home ground in the Top End. The trigger is the death of Eddie’s former partner, Bushy, and the case they end up chasing is the killing of a crocodile-show operator, with a field of rival croc showmen, one of them played by Luke Hemsworth, as suspects. Dulcie complains about the heat almost without pause, which is exactly the point: the woman built on control has been dropped somewhere that makes control impossible.

A crowded stretch between the seasons

Box did not wait around between Deadloch seasons. She appeared in the SBS anthology Erotic Stories, in the episode “The Deluge”, which drew an AACTA nomination for best lead actress in a drama, and in Paper Dolls. She played Dr Brennan in Netflix‘s Boy Swallows Universe, adapted from Trent Dalton’s novel, Cheri St Clair in the ABC’s Ladies in Black, and Gabs in the SBS drama Four Years Later. In 2024 she also said she had stepped away from acting for eight months to look after her children.

The old Adelaide circle came back into view with Jimpa, Sophie Hyde’s film co-written with Matthew Cormack and drawn from Hyde’s own family history. Box plays Emily, the sister of Olivia Colman‘s Hannah, with John Lithgow as the title character. The film premiered at the Sundance Film Festival in January 2025 and reached cinemas in the United States and Australia in February 2026. She also played Ella in, and executive produced, Cristabel Sved’s short film Date 3. In August 2026 she turned up as Mrs McSwat in Netflix’s new My Brilliant Career, and in September she was on cinema screens as Dr Ainsley in Runner, Scott Waugh’s Brisbane-set action comedy with Alan Ritchson and Owen Wilson, released by Angel Studios.

Home life

Box has been with the writer and actor Jada Alberts since they met at a playwrights’ conference in 2009. Alberts also appeared in Wentworth, in 2013 and 2014, before Box joined the show. They have three daughters and live in Sydney, in what Box has described as a really affectionate household. In 2020 they were weighing a move back to Adelaide; three years later they were still in Sydney.

What comes next

The rest of 2026 is busy. Dustfall, a six-part ABC drama, also picked up by the BBC, adapted from Vikki Petraitis’s novel The Unbelieved, starts on 11 October, with Anna Torv as a detective who returns to her coastal hometown and uncovers a ring of drink spiking and assaults; Box is in the ensemble and all six episodes are directed by Emma Freeman. Then comes Wentworth: Halfway Home, the Binge spinoff that started shooting in Melbourne in July, in which Box returns as Lou Kelly beside Nicole da Silva’s Franky Doyle and Katrina Milosevic’s Boomer, with Rachel Griffiths and Sophie Lowe among the new faces. Lou is out on bail and facing a retrial, and the series is about how hard freedom is to keep. The feature Croak is also on her slate. After years of holding the lid down on other people’s scenes, Box ends 2026 with two women who are allowed to lift it.