(Second viewing)

This is still one of (if not the) greatest Base under Siege stories in Doctor Who. The slow build up of tension, the introduction of the characters and their predicament and the amazing atomsphere of the lighthouse make for a great four-part horror story. Plus, this is the first (and only, at least in TV) appearance of the Rutans. The design is really cool, although obviously outdated, and the final confrontation is gripping and ingenious.

Leela and the Doctor are such a charismatic pair, she is quite possibly my favourite companion for Tom Baker's incarnation.