Professor T Season 4 finale ending explained: How Jay Morgan and Alex Healey’s deaths unfolded

Professor T, Season 4, Season Finale "The Warrior Gene" (Episode 6), aired on September 28, 2025, on PBS, concludes the season's loose storylines. The false confession of Jay Morgan about shoving and murdering someone at the end of the show does not happen.

His death from a cranial hemorrhage is due to pre-existing health issues, possibly involving steroid (diuretic) abuse. Similarly, Alex Healey dies from a pre-existing condition of low platelet counts, making any injury, no matter how minor, potentially fatal.

The finale confirms that people die indirectly and not out of spite. Besides highlighting the main crime, the Season 4 finale also briefly explores character development among the main characters. Professor T includes Dr. Goldberg himself in the wedding invitation, marking another small milestone for them.

Zelda, afraid to ruin her friend Adelaide's happiness, manages her own upcoming wedding. These character moments add emotional depth to the procedural case and show that the finale can successfully balance workplace tension with interpersonal drama.

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The death of Jay Morgan and the investigation

The sudden death of Jay Morgan, along with a pub, begins the main investigation of Professor T, Season 4. An excessive diuretic effect during medicolegal analysis indicates likely steroid use. While Jay indirectly contributed to Alex Healey's death, his own death results from health complications rather than intentional harm.

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Alex Healey's vulnerability

Dan and Chloe find Alex Healey's body on the riverbank. His low platelet count had recently made him very vulnerable to injury, and what could have been a minor bump turned out to be fatal. The conclusion confirms that Alex died, along with Jay, from secondary causes, illustrating how medical conditions can intertwine with harmful lifestyles with disastrous results.

This entire plot in Season 4 again confirms that the show stays true to medical reality explanations.

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Use of steroids and pressure by the Rowing Team

The rowing team subplot reveals the pressures faced by student athletes. Coach Tina Northam claims she recommended only natural supplements, yet diuretics found in Jay’s system suggest hidden risks. Money pressure, performance stress, and external pressures all contribute to the dangerous chain of events leading to deaths.

The Professor T Season 4 series finale shows how ambition, peer pressure, and health risks come together in destructive ways.

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Professor T and Dr. Goldberg: Personal subplots

Besides the main quest, character relationships in Season 4 are explored. Professor T's presentation of a wedding invitation to Dr. Goldberg suggests their growing relationship, while Zelda recalls her wedding, adding emotional depth. Subplots, such as those involving personal details, enrich the crime-solving action, making the season finale both routine and engaging.

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Lyndon Collins and ethical questions

Lyndon Collins's homonymous lecture on a problem-affected gene-editing machine relates to the entire plot, which involves ethical issues surrounding the use of science to prevent crime. There is also a subplot of stolen laptops, which adds tension to the story.

Such subplots in Professor T Season 4 increase the complexity of the narrative by exploring moral questions and technological ambiguity.

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Resolution and themes

Briefly, Season 4 weaves its storylines into a tapestry. Medically plausible explanations are provided for Jay Morgan's and Alex Healey's deaths, focusing on indirect impact rather than criminal intent. The finale addresses moral issues, personal responsibility, and the interconnectedness of health, behavior, and external influences.

Professor T's Season 4 finale balances crime procedural questions, character reflection, and ethical dilemmas perfectly. Seasonal mysteries are resolved during the episode without sacrificing depth in the characters' personal growth, culminating in a thoughtfully considered yet emotionally satisfying ending.

Also read: Professor T Season 4 Episode 4 recap: Francesca’s deadly plot and the shocking on-stage stabbing.