Doctor Who: EVERY Fifteenth Doctor Episode Ranked Worst To Best

10. The Well

The Well is the first truly frightening episode of Gatwa's era. It serves as a surprise sequel to the Tenth Doctor story Midnight, walking a fine line between adding to that mythos and creating its own new take on the monster. 

Casting Rose Ayling-Ellis was a blessing for the episode. It was only after casting her that her character was written to be deaf. This raises the threat of the monster, but also helps the audience understand the terror she's had to survive before our heroes get there. The use of BSL is another highlight, adding another nuance to the story without losing the menace.

The Well is a mixture of horror, tragedy, comedy, and action. It succeeds in building tension, then slips a little towards the climax. Visual clues are unnerving (how many people are in that airlock?) and the twist ending is genuinely frightening. 

Anita Dobson's cameo is sadly misplaced, serving mainly to ensure she's in the episode, rather than forwarding the plot in any real sense. Overall, the episode was a strong week for Varada Sethu's Belinda, giving her a chance to show her skills and courage in the horror of it all.