This story is fine but that's all I can say really about it. The COLT plotline goes nowhere, the Noah plotline goes nowhere. Its just teasing and teasing and honestly its beginning to be like pulling teeth with how drawn out these arcs are. There's some good character beats, especially with the clones and the whole 'letting go' aspect. I do hope the next 2 series can deliver on these arcs given how long they've been dragged out, and I really hope they stop bringing up the Doctor all the time its like new who with the Brigadier.