Ep 35. The Sensorites: Kidnap

In the The Sensorites: Kidnap, the TARDIS crew encounters a group of telepathic aliens known as the Sensorites. The Doctor, Susan, Ian, and Barbara find themselves on a spaceship controlled by the Sensorites, who have taken Ian hostage in an attempt to negotiate with the humans from Earth.

The Sensorites are a peaceful race, but they have been experiencing problems with their own kind. Some of their own people have begun to go insane, attacking others and causing chaos. The Sensorites believe that humans from Earth may be able to help them find a solution to this problem. They have brought the TARDIS crew to their spaceship and taken Ian hostage as a bargaining tool.

While the Doctor and Barbara attempt to negotiate with the Sensorites, Susan and the Captain of the Earth ship head down to the Sensorites' planet to investigate what is causing the problem. They soon discover that the insanity is caused by a mineral found on the planet, which the Sensorites have been mining for fuel. The mineral has a poisonous effect on their brains over time, causing madness and violence.

Meanwhile, back on the spaceship, Ian has been taken to the Sensorites' ship control room. There, he discovers that someone has been sabotaging the spaceship, causing it to drift off course. Ian is able to identify the culprit - a group of insane Sensorites who have been manipulating the others - and he sets out to stop them before it's too late.

As the TARDIS crew works to resolve the situation and find a way to help the Sensorites, they become caught up in a dangerous game of politics and deception. They must navigate their way through the complex web of alliances and rivalries between the Sensorites in order to find a way to save both the aliens and themselves.

The Sensorites: Kidnap is a tense and suspenseful episode that explores the themes of madness, power, and diplomacy. It features strong performances from the cast, particularly William Hartnell as the Doctor and Carole Ann Ford as Susan. The episode showcases the classic Doctor Who formula of a high-stakes adventure in a strange and mysterious setting, combined with a thought-provoking commentary on humanity's place in the universe.