As ever, this has the usual scientific accuracy you can expect from the author. It feels fairly plausible for a future society mining around Saturn. However, it has that element of fantasy that Doctor Who so often contains, something not really based on any science but works excellently for the story.
Baxter's weakness is so often his characterisation but he's given the lead characters of the Doctor, Jamie and Zoe already. Each is characterised really well and he delves well into the minds of Jamie and Zoe, making them more well-rounded characters than they were often written for the show. His supporting cast is also unusually strong, from the villain of the piece Florian Hart to MMAC, a Scottish robot. I really think it's the best characterization I've ever read from Baxter.
The story feels fairly like a story from it's era, but there's something about it to make it a bit faster and more engaging than many of the stories feel now. It manages to fit its era yet feel modern at the same time. It's also really steeped in Who mythology. As well as loads of minor references to the Second Doctor's adventures, one of the characters has a direct link back to The Ice Warriors and in many ways the book is a prequel to Zoe's debut story, The Wheel in Space. The Silurians also make an appearance, sort of. Plus, for Stephen Baxter fans, this book can genuinely be considered part of his Manifold series- Bootstrap Industries is the company involved and the Doctor mentions having met its founder once- Reid Malenfant presumably!
This is everything you want from a Doctor Who story really. It is lots of fun and has strong characters, a decent and interesting plot and feels like it has some genuine depth. I really hope Baxter gets to do another Who novel at some point because I'd love to see what he does with other incarnations of the Doctor!
