I always think that the best Dr Who stories are those that can be watched and enjoyed by people that aren't necessarily Dr Who fans, and all the way through this episode there's enough going on, enough excitement, enough engagement for even casual viewers to enjoy.
The fifth part is great the whole way through, but despite all the excellent scenes, it's all about one scene in particular, that brilliant, chilling cliffhanger. Genesis has had excellent cliffhangers at every point, each one has meant something, I'm certain that Tom improvised in this one, as there wasn't one originally scripted, and he got it bang on, one of, if not the best cliffhanger to ever come out of the show, it's scary, and would have left kids in torment for a whole week when originally broadcast.
Dr Who doesn't get better then this. 10/10
The fifth part is great the whole way through, but despite all the excellent scenes, it's all about one scene in particular, that brilliant, chilling cliffhanger. Genesis has had excellent cliffhangers at every point, each one has meant something, I'm certain that Tom improvised in this one, as there wasn't one originally scripted, and he got it bang on, one of, if not the best cliffhanger to ever come out of the show, it's scary, and would have left kids in torment for a whole week when originally broadcast.
Dr Who doesn't get better then this. 10/10