Doctor Who (1963) Season 17 Episode 23 Shada (3)

The episode "Shada (3)" is the 23rd episode of the 17th season of the popular British science fiction television series Doctor Who. The episode takes place on the planet of Gallifrey, the Doctor's home planet, where he returns to the Time Lord's headquarters in order to retrieve a book from the library.

While there, the Doctor discovers that an evil scientist named Skagra is planning to unlock the secrets of a prison planet called Shada, which holds the most dangerous criminal in the universe. Skagra aims to use the criminal's knowledge to gain more power and control over the universe.

The Doctor teams up with a retired Time Lord named Professor Chronotis, who was responsible for safeguarding the key to unlock the planet Shada. The two begin to investigate Skagra's plan and attempt to stop his nefarious scheme.

As the Doctor and Professor Chronotis travel through time and space to try to prevent Skagra from unlocking the prison planet, they come across several other notable characters, including the Doctor's former companion Romana and the robot K-9.

Throughout the episode, the Doctor comes face to face with some of his greatest fears and darkest secrets, as he is forced to confront the idea of eternal life and the consequences that come with it. The episode also features several tense action sequences and thrilling moments, as the Doctor and his team race against time to prevent Skagra from unlocking the dangerous secrets of Shada.

Overall, "Shada (3)" is a gripping and captivating episode of Doctor Who, filled with memorable characters, stunning visuals, and exciting plot twists. Fans of the series will not want to miss this thrilling installment of one of the best science fiction television shows of all time.