Doctor Who: Planet of Fire

The Fifth Doctor and his companion Tegan investigate mysterious fires on the planet Sarn, where strange heat fluctuations and disappearances are occurring. They discover a long-lost civilization and a plot involving the renegade Time Lord the Master, who is attempting to regain his youth and power by exploiting the planet's unique geothermal energy.

Planet of Fire is generally considered a strong entry in the Fifth Doctor era, praised for its return of the Master, exciting plot, and the debut of Peri Brown. While some aspects of the pacing and special effects have drawn minor criticism over the years, it remains a fan favorite for its action and character interactions.

• Praised for the compelling return of the Master and the engaging storyline.

• The introduction of Peri Brown is seen as a highlight, adding a new dynamic to the TARDIS crew.

• The visual effects and some plot conveniences have been noted as minor drawbacks by some critics.

Google audience: Audience reviews often highlight the excitement of the Master's return and the chemistry between the Doctor and his companions. The adventure aspect and the exploration of the planet Sarn are frequently commended.

This story marks the final regular appearance of companion Tegan Jovanka and the debut of Peri Brown, who would become one of the Doctor's longest-serving companions of the classic series.