Susan and Ed are in a perilous position, still having to ensure the Katuma survey is completed and the RX44 launched, while someone continues to try and wreck the mission.
It's big and brash, wonderfully over the top, and it's definitely ventured into sci-fi territory - and I'm more than happy with that.
A bold move to kick off series two with a two-part story, but it works. The plot felt far too big to resolve in 45 minutes, and the extended run gives the story and characters room to breathe.
It's a very satisfying conclusion. Fast and tense, constantly shifting direction - just as the team seem to get ahead, the villains counter. Proper to-and-fro action.
We learn a little more about Beckett through his ex, with Birdsall great, though the focus leans more on Ed and Ros. Ros is once again racing around London like Sarah Jane Smith with sonic lipstick at the ready.
The visuals are very much of their time, but pretty decent. The space shots are a little raw, but if Doctor Who hadn't been axed in 1989, this is exactly how I imagine it would have looked. Every device bleeps and whirls with pure satisfaction.
I'm a fan of Lesley Vickerage, but she's getting money for old rope here - mostly sitting in an orange suit fawning over Craig McLachlan. Tough job.
Wonderful nostalgia and bags of fun.
8/10.
