Ep 9. Sarcophagus

In Blake's 7 season 3 episode 9, titled "Sarcophagus," the crew of the Liberator discover a mysterious alien spacecraft floating in space. Upon investigation, they find a sarcophagus within the vessel that contains the body of a blue-skinned humanoid. The crew brings the sarcophagus aboard the Liberator, but they soon discover that the alien corpse inside is not dead.

The alien's body is being kept in a suspended animation state by the sarcophagus, which is powered by a rare and valuable energy source. The crew debates what to do with the powerful artifact, but they ultimately decide to keep it on board the Liberator for safekeeping.

However, their peaceful plans are disrupted when a band of bounty hunters board the ship and attempt to steal the sarcophagus. The crew manages to fend off the attackers, but they soon find themselves stranded on a planet with no way to leave.

As the crew struggles to repair the damage to their ship, Avon and Vila discover that the sarcophagus has been opened and the alien corpse has disappeared. They soon realize that the energy source powering the sarcophagus has been activated, and it's only a matter of time before the alien wakes up.

When the alien finally awakens, it takes control of the ship and begins to draw energy from the Liberator's systems. The crew must band together to stop the alien and regain control of their ship, even if it means making a dangerous sacrifice.

"Sarcophagus" is a thrilling episode that explores the consequences of playing with powerful technology and the lengths people will go to protect valuable resources. The episode also delves into the characters' motivations and desires, as they each have their own ideas about what to do with the sarcophagus and the possibilities it represents. With strong performances from the cast and a gripping storyline, "Sarcophagus" is a standout episode in the third season of Blake's 7.