Professor T Season 4 Debuts on PBS, Marking Return of Beloved Crime Drama

The highly anticipated fourth season of the British crime drama “Professor T” made its debut on PBS stations across the United States yesterday evening, August 24, 2025, with the premiere episode “Overboard” airing at 8:00 PM ET. Today, August 25, 2025, marks the first day following this successful launch, with several PBS stations broadcasting repeat airings of the season opener.

Season 4 Premiere Delivers Emotional Continuation

The new season picks up six months after the shocking conclusion of Season 3, which saw the death of Detective Sergeant Lisa Donckers, a pivotal character portrayed by Emma Naomi. The premiere episode finds Professor Jasper Tempest, played by Ben Miller, still grappling with grief and unable to face police work, while his colleague DI Dan Winters throws himself into work as a coping mechanism.

The opening episode, “Overboard,” centers on the disappearance of a socialite from a cruise ship, forcing the reluctant Professor back into action despite his emotional state. The case proves to be more complex than initially appears, involving a staged crime and kidnapping rather than a simple overboard incident.

New Cast Member Joins Ensemble

Season 4 introduces DC Chloe Highsmith, portrayed by Rhian Blundell, who joins the team to fill the void left by DS Donckers’ departure. The character is described as young and inexperienced but brings a fresh perspective to the crime-solving team.

Additionally, the season features Zoë Wanamaker as Zelda Radclyffe, Jasper’s aunt, who arrives to help care for both Jasper and his mother Adelaide’s cat, Kafka, while Adelaide is away on a world tour.

Streaming Availability and Broadcast Schedule

PBS Passport subscribers have been able to stream all six episodes of Season 4 since August 10, 2025, providing early access ahead of the broadcast premiere. The season will continue to air on Sunday evenings at 8:00 PM through September 28, 2025, with the finale scheduled for that date.

The series maintains its Cambridge University setting and continues to explore the brilliant but obsessive Professor Tempest’s unique approach to solving crimes while dealing with his OCD and complex family relationships. Season 4 promises to delve deeper into themes of grief, healing, and the blurred lines between professional and personal relationships.

Critical Reception and Future Outlook

The show has already been renewed for a fifth season, indicating continued confidence in the series’ popularity among audiences. Based on the Belgian series of the same name, the British adaptation has carved out its own identity while maintaining the essential elements that have made it a fan favorite.

As viewers settle into the new season today, the series continues to blend crime-solving elements with character development, focusing on how the team navigates their collective trauma while facing new challenges.