Who Plays Who In Netflix’s ‘Unabomber’ (With Photos)

Netflix’s true crime thriller ‘Unabomber’ arrives on the streamer on September 25, 2026, and it brings together an ensemble built around one of the more unsettling chapters of American history. The film follows Ted Kaczynski from his years as a Harvard student subjected to controversial psychological experiments to the FBI investigation that eventually caught up with him decades later. Director Janus Metz shapes the story less as a conventional manhunt and more as a psychological drama, with intellect itself becoming the source of dread.

The cast splits neatly across the film’s two timelines, one rooted in Kaczynski’s formative years and the other in the agents trying to stop him. Below is a rundown of who plays who in ‘Unabomber’, along with photos of the cast in character.

Jacob Tremblay

Jacob Tremblay plays Ted Kaczynski in his teenage years as a Harvard prodigy whose experience there sets the stage for what comes later. Tremblay has said he did not know much about Kaczynski’s personal life before signing on, admitting he had no idea Kaczynski attended Harvard until reading the script.

The actor described being fascinated to learn that Kaczynski was a mathematical genius by the age of sixteen. According to Tudum, Tremblay wanted to play Kaczynski as a real person and drew on his own experience of feeling out of place while working around people much older than himself.

Russell Crowe

Russell Crowe plays Henry Murray, the Harvard psychology professor who runs the controversial experiments on the young Kaczynski. The film presents Murray as a man who recognizes something unusual in his young subject even as the experiments grow more troubling.

Crowe’s casting follows a career that has already moved between historical epics, psychological dramas and morally complicated figures, and this role leans into that same territory of intellect turned unsettling. The professor’s relationship with Kaczynski becomes one of the central threads running through the film.

Shailene Woodley

Shailene Woodley plays FBI agent Joanne Miller, the investigator tasked with leading the manhunt for Kaczynski decades after the Harvard experiments took place. Miller is a fictional character created to help lead the investigative side of the story.

Woodley has described a parallel between her character and Kaczynski, noting that neither one is willing to back down from their own instincts. Her storyline sits in the film’s second timeline, set decades after Kaczynski’s time at Harvard.

Annabelle Wallis

Annabelle Wallis plays Christiana Morgan, Professor Murray’s academic partner and co-director of the Harvard Psychological Clinic. Morgan is Murray’s associate throughout the experiments depicted in the film.

Wallis rounds out the trio at the center of the Harvard timeline alongside Crowe and Tremblay, giving the experiments sequences another perspective inside the clinic.

Alexander Ludwig

Alexander Ludwig takes on the role of an FBI agent within the investigation storyline. His character places him on Miller’s side of the manhunt as the bureau closes in on Kaczynski’s identity.

Ludwig’s presence adds another face to the law enforcement side of the film, working alongside Woodley’s character as the case develops.

Steven Ogg

Steven Ogg also joins the cast of ‘Unabomber’ in a supporting role. His character has not been detailed in official materials released so far.

Ogg’s casting adds a familiar face to the ensemble even as Netflix has kept specifics about his part under wraps ahead of the premiere.

Marc Menchaca

Marc Menchaca rounds out the supporting cast of the film. Like Ogg, the specifics of his character have not been disclosed publicly.

Menchaca’s role remains one of the more mysterious pieces of the ensemble, with Netflix choosing to keep the character details close until the film actually premieres.

With Kaczynski’s story split across two eras and told through a cast built for both the psychological drama at Harvard and the FBI pursuit that followed, which performance are you most curious to see when ‘Unabomber’ finally lands on Netflix.