By If you have been watching Netflix’s hit family drama, chances are you have typed some version of Ginny and Georgia Austin into a search bar at least once. Austin Miller is the youngest member of the Miller family, and while he does not get as many headlines as his mother Georgia or his sister Ginny, his storyline has quietly become one of the most emotional threads in the entire show. By season three, Austin is no longer just the sweet little brother on the sidelines. He is a central figure in a murder trial, and the choices he makes change the course of the series.
This article breaks down everything worth knowing about Austin Miller and the actor who brings him to life, Diesel La Torraca, including his age, background, and how his role has grown from a quiet fourth grader into one of the show’s most heartbreaking characters.
Who Is Austin Miller in Ginny and Georgia?
Austin Miller is the son of Georgia Miller and Gil Timmins, and the younger half brother of Ginny Miller. When the series begins, Austin is nine years old and has just moved with his mother and sister to the fictional New England town of Wellsbury, Massachusetts. He is shy, sensitive, and often the quietest person in a room full of loud personalities, which makes him easy to overlook at first glance.
But Austin is far from a background character. He has already lived through more instability than most kids his age, including a difficult relationship with his father and a childhood shaped by his mother’s constant need to protect her children by any means necessary. As the show progresses, Austin becomes a keeper of the Miller family’s darkest secrets, which is a heavy burden for someone so young.
Who Plays Austin Miller?
The actor behind Austin Miller in Ginny and Georgia is Diesel La Torraca, an Australian performer who has played the role since the series premiered on Netflix in 2021. La Torraca was cast as Austin when he was only eight years old, and he has grown up alongside the character over the course of three seasons.
Fans searching for Ginny and Georgia Austin often want to know more about the young actor himself, since his real life growth spurt between seasons became a talking point among viewers in 2025. La Torraca has spoken openly about the challenge of playing a character who is supposed to still be a preteen while he himself has physically matured into a teenager.
Diesel La Torraca Age, Nationality, and Acting Career
Diesel La Torraca was born on March 1, 2011, in Collaroy, Australia, making him an Australian actor by nationality. As of the most recent season of Ginny and Georgia, he is fourteen years old, though his character Austin is still written as roughly nine or ten within the story.
La Torraca began acting at around age five and had already built a resume before landing the role that would define his career so far. His early credits include the 2019 horror comedy film Little Monsters and the Australian miniseries Lambs of God, both of which came out the same year. He has also appeared in projects such as The Secrets She Keeps.
Since Ginny and Georgia made him a recognizable young star, La Torraca has continued to take on new opportunities, including a role in the upcoming horror series Welcome to Derry, which is set in the world of Stephen King’s It. For an actor still in his early teens, that is a fairly impressive range, moving between family drama, horror, and psychological thriller territory.
Austin’s Relationship With Georgia and Ginny
Austin adores his mother and his older sister, and much of his early character arc revolves around his desire to feel safe and settled after years of moving from place to place. Georgia is fiercely protective of Austin, sometimes to a fault, and she has gone to extreme lengths throughout the series to shield him from harm, even when those choices end up putting him in impossible positions.
His bond with Ginny is especially significant. She is often the one he confides in, and she frequently acts as his emotional anchor when Georgia is overwhelmed or unavailable. That closeness is part of what makes the later seasons so difficult to watch, since Ginny eventually uses her influence over Austin in a way that permanently changes their relationship.
Austin’s Relationship With His Father Gil
Gil Timmins, played by Aaron Ashmore, is Austin’s biological father, and their relationship is one of the more complicated threads in the show. Gil has a history of controlling and abusive behavior toward Georgia, and Austin has witnessed firsthand how frightening his father can be. At the same time, Austin genuinely wants a relationship with Gil and craves the kind of stability that a present father figure could offer.
This push and pull becomes especially painful in later seasons, when Austin briefly lives with Gil and starts to form a real bond with him, only for that relationship to be shattered by the events of Georgia’s murder trial. Austin’s feelings toward his father are never simple, and the show does not pretend otherwise.
Austin’s Personality, Interests, and Character Development
In the earlier seasons, Austin is introduced as an introverted, imaginative kid who loves comic books and superheroes, and who wears round glasses that give him a bit of a Harry Potter look, a detail his mother leaned into on purpose. He struggles to make friends at his new school and often seems more comfortable in his own world than in social situations.
As the series continues, Austin’s personality shifts under the weight of what he has experienced. He becomes warier, more withdrawn, and increasingly aware that the adults around him are not always telling him the truth. By the time viewers reach the events of season three, Austin has been forced to grow up faster than any child should, carrying secrets that would be heavy for an adult, let alone a preteen.
Austin’s Major Storylines Across Seasons 1, 2, and 3
In season one, Austin is mainly focused on settling into Wellsbury and dealing with his father’s return into his life, since Gil is released from prison after serving time for financial crimes. His storyline in this stretch is quieter, centered on adjustment, friendship struggles, and glimpses of the family’s instability.
Season two raises the emotional stakes considerably. Austin witnesses disturbing violence between his parents, and he becomes caught in the middle of Georgia and Gil’s escalating conflict. This is also the season that lays important groundwork for what comes later, as tension between Gil and the rest of the family builds toward a breaking point.
Season three is where Austin’s role becomes central to the entire plot. After Georgia is arrested and charged with murder, Austin is revealed to be the only witness to what actually happened the night Tom Fuller died. Flashbacks show that Austin saw his mother’s role in the killing, a secret he initially kept to himself. Later, under pressure from Ginny, Austin takes the stand during Georgia’s trial and testifies that it was actually Gil who was responsible, not his mother. That lie sets Georgia free, but it comes at an enormous personal cost, fracturing Austin’s relationship with both of his parents and with Ginny herself.
Austin’s Role in Important Family Events and Conflicts
Austin is present for, or directly connected to, nearly every major turning point in the Miller family’s story. He is there the night Georgia commits the act that leads to her arrest, and his silence in the immediate aftermath protects his mother, at least for a while. He becomes a pawn, in some ways, in the custody arrangements that follow Georgia’s house arrest, since Ginny’s father Zion ends up with temporary custody of Ginny while Austin is placed with Gil.
His testimony during the trial is arguably the single most consequential moment of season three, since it directly determines whether Georgia goes to prison. Ginny convinces Austin to accuse Gil, using both emotional pressure and the threat that he could be moved away to Michigan if he does not cooperate. It is a decision that saves Georgia but leaves Austin carrying guilt that the show suggests will follow him for a long time.
How Austin’s Character Changes as the Series Progresses
Austin starts the series as a fairly passive character, someone things happen to rather than someone who drives the plot. By the end of season three, that has completely flipped. His choice on the witness stand becomes the hinge point for the entire season’s ending, and the emotional fallout from that choice sets up unresolved tension heading into future episodes.
Viewers also see Austin’s trust in the adults around him erode. He begins the show believing that his mother and sister will always protect him, but by the finale, he has learned that being protected sometimes means being asked to lie, to choose sides, and to grow up far faster than he should have to.
What Fans Should Know About Austin in the Latest Available Season
As of season three, Austin’s future is left deliberately uncertain. His false testimony puts his father in serious legal jeopardy, since authorities are shown looking for Gil after he leaves the courtroom, and there is a real possibility that Austin could be called to testify again if his father is ever caught. The final episodes also show Austin dealing with quiet grief over the loss of the relationship he was starting to build with Gil, even holding onto a jersey his father gave him as a small, private way of processing what happened.
Season four has been confirmed, and given how much unresolved material season three leaves behind, it is likely that Austin’s guilt, his strained relationship with Ginny, and the fallout from his testimony will all play a significant role going forward.
Key Takeaways
- Austin Miller is Georgia’s son and Ginny’s younger half brother, played by Australian actor Diesel La Torraca since the show began in 2021.
- Diesel La Torraca was born March 1, 2011, and is fourteen years old as of the most recent season, even though Austin is written as roughly nine or ten.
- Beyond Ginny and Georgia, La Torraca has appeared in Little Monsters, Lambs of God, and The Secrets She Keeps, with an upcoming role in Welcome to Derry.
- Austin’s relationship with his father Gil is loving but complicated, shaped by Gil’s history of abuse toward Georgia and Ginny.
- Season three turns Austin into the emotional center of the show’s murder trial storyline, when he falsely testifies that Gil, not Georgia, killed Tom Fuller.
- That decision, pushed by Ginny, frees Georgia but permanently changes Austin’s relationships with both parents and his sister.
- With season four confirmed, Austin’s guilt and the search for Gil are expected to shape what comes next for the Miller family.
Frequently Asked Questions
- Who plays Austin in Ginny and Georgia? Austin Miller is played by Diesel La Torraca, an Australian actor who has portrayed the character since the series premiered in 2021.
- How old is Austin in Ginny and Georgia? Austin is written as roughly nine or ten years old throughout the show, even though the actor playing him has aged into his teens during production.
- How old is Diesel La Torraca? Diesel La Torraca was born on March 1, 2011, making him fourteen years old as of the release of season three in 2025.
- Who is Austin’s father in Ginny and Georgia? Austin’s father is Gil Timmins, played by Aaron Ashmore. Gil has a history of controlling and abusive behavior that shapes much of Austin’s storyline.
- What happens to Austin in Ginny and Georgia? Austin witnesses his mother’s involvement in a death, is later placed in his father’s custody, and ultimately testifies in court that Gil, rather than Georgia, was responsible, a lie that frees his mother but damages his family relationships.
- Is Austin in season 3? Yes, Austin plays a major role in season three, since his testimony becomes the deciding factor in Georgia’s murder trial.
- What other shows has Diesel La Torraca appeared in? Outside of Ginny and Georgia, La Torraca has appeared in Little Monsters, Lambs of God, and The Secrets She Keeps, and he has an upcoming role in Welcome to Derry.