Ep 13. Nightmare of Eden (1)

The Doctor, accompanied by Romana, is investigating a mystery onboard the Empress, a spaceship that has become stuck in a hyperspace loop with another vessel, the Hecate. As they search the ship, they discover strange and disturbing occurrences, including bodies with bite marks and an illegal drug called Vraxoin that is being smuggled onboard.

As the Doctor and Romana delve deeper, they discover that the drug has caused dangerous hallucinations and is linked to a terrifying creature that is loose on the ship. They must navigate the dangers onboard and prevent the two ships from colliding, while also uncovering the true identity of those behind the illegal drug trade.

Meanwhile, the Doctor faces a personal struggle as he is forced to confront his own relationship with drugs and addiction. As he works to save the crew and passengers, he must also come to terms with his own demons and find the strength to resist the temptations of Vraxoin.

In the end, the Doctor and Romana successfully stop the ships from colliding and expose the smugglers behind the drug trade. While the Doctor is able to triumph over his personal struggle, the experience leaves him shaken and he is left to contemplate the consequences of his actions.