Ep 16. Planet of Fire: Part 4

As the fourth and final installment of the Planet of Fire arc of Classic Doctor Who season 21, this episode follows the Doctor and his companions as they continue their journey on the volcanic planet Sarn. Turlough, one of the Doctor's companions, is revealed to have a connection to the planet's history and becomes a key player in the unfolding events.

Meanwhile, the Master, the Doctor's long-time adversary, arrives on Sarn with his new acolyte, Kamelion, a shape-shifting robot controlled by the Master. The Master schemes to use the planet's volcano to further his own nefarious plans, but his machinations are complicated by the intervention of the Doctor and his allies.

As tensions rise, the Doctor and his companions must race against time to prevent a catastrophic eruption that threatens to destroy the planet and its inhabitants. Along the way, they face danger, betrayal, and unexpected twists as they untangle the web of deceit and intrigue surrounding Sarn and its enigmatic native culture.

With its blend of sci-fi action, mystery, and suspense, Planet of Fire: Part 4 offers an exciting and thrilling conclusion to Classic Doctor Who season 21's epic adventure. Fans of the classic series will appreciate the return of iconic characters like the Master and Kamelion, while newcomers will be drawn in by the high-stakes drama and fantastical world-building. Overall, this episode is a must-watch for anyone who loves science fiction, adventure, and a good old-fashioned battle between good and evil.