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Thicker Than Water lands like a soft punch. It’s not loud, not full of Daleks or cosmic horrors, but it rips at you if you care. The Sixth Doctor returns to Világ three years after the Killoran invasion, traveling with Mel to visit Evelyn Smythe, who left his TARDIS to marry Rossiter and build a life. But that life is complicated—her health is fragile, her family is fractured, and her status as public figure and alien partner of one of Világ’s leaders means she carries more weight than just memories.
From the very start, the tension is twofold: private wounds and political pressure. Rossiter is now Principal Triumvir, governing with alien tech from the Killorans. Evelyn is caught between peace and fear—her stepdaughter Sofia believes all alien artifacts must be destroyed, opposing Rossiter’s attempts to heal the world. On top of that, Evelyn is experiencing mood swings and health scares—and not just because of old damage from the war, but because her own genetic makeup (including Killoran DNA) is changing how people perceive her, both medically and socially.
Mel is a good lens for all this because she sees Evelyn without the past-baggage filter; but the Doctor sees the consequences of his absence. Evelyn’s anger, her quiet disappointment, the ways she’s built a life that he couldn’t stay in—these are the moments that make this more than just another companion-visit story. The Doctor’s guilt—the way he stayed away from her wedding—isn’t shrugged off; it’s confronted. Evelyn isn’t just a past companion to be rescued; she’s a full person with agency who makes decisions, holds Rossiter accountable, and won’t let her history be a convenient emotional prop.
The plot weaves kidnapping (yes, Evelyn and Mel are abducted), medical horror (experiments on Killoran survivors and coma patients under the guise of healing), political intrigue, family betrayal, and finally a very touching epilogue: Evelyn meeting the Seventh Doctor, learning that Hex is the son of Cassie, finding closure and love that lasts beyond one incarnation. That last act gives Evelyn more than just a goodbye—it gives her legacy. It gives us, her listeners, something real to hold on to.
Sometimes the pacing stutters—the emotional peaks are strong, but there are lulls where politics feels like talking without consequence. Some characters, like Sofia and Dr. Szabó, feel under-explored just when the plot wants them to push harder. Also, the health angle: Evelyn’s condition is serious, but it’s almost backgrounded until crisis, rather than fully woven in from the start, which might be deliberate, but it also feels like a bit of an afterthought in terms of how much it weighs on her decisions.
Themes? Forgiveness. Legacy. Power (especially political power) and how its burdens fall unevenly. Identity tied to trauma. The morality of using alien tech in healing, and the responsibilities of leadership—particularly for those in the public eye who can’t simply choose to retire from expectation. Also patriarchy, yes, especially in how women like Evelyn and Fausta (Rossiter’s wife) are silenced or constrained by custom, protocol, expectations—even while being central players.
Final Thoughts:
Thicker Than Water is a farewell that earns its tears. Evelyn gets a beautiful send-off, not because she fades, but because she grows and is seen. The Doctor is honest with his failures. It’s heavy, it’s tender, and when it ends, it’s more than closure—it’s a gift. It might lean on Big Finish lore a lot, making it tougher for newcomers, but if you’ve followed Evelyn’s arc, this is essential.
Rating: 4.5 out of 5 bittersweet homecomings