Ep 8. Father's Day

The episode titled "Father's Day" from season 1 of Doctor Who (2005) follows the story of Rose Tyler, who is given an opportunity to visit her deceased father on the day of his death. Despite the Doctor's warnings, Rose uses the TARDIS to travel back in time to meet her father before he dies in a car accident. However, her actions have catastrophic consequences and lead to the emergence of monstrous creatures known as the Reapers, which threaten to destroy the world.

As Rose tries to set things right, she learns the importance of accepting the consequences of her actions and the value of memories and the people she loves. Meanwhile, the Doctor faces his own demons as he confronts the limitations of his powers and the emotional pain of losing those he cares about.

This emotionally charged and thought-provoking episode tackles complex themes of grief, family, and time travel, and features standout performances from the leads, Christopher Eccleston and Billie Piper. "Father's Day" is widely considered as one of the best episodes in the series and a must-watch for fans.