This is part of a series of reviews of Doctor Who in chronological timeline order.

Previous Story: The Fourth Wall

An Ark in Space sequel is a genuinely interesting idea - seeing how the colonists reinhabited Earth is really cool and adds something meaningful to the serial unlike many audio sequels to TV stories. However, the one thing a sequel does not need is the Wirrn. This story could have been a hundred times more interesting if it didn't devolve into a generic runaround with the Wirrn that captures nothing good about the original story.

The characters are all really good. The story's central drama hinges on the son of the main family's death. Only it's revealed that he didn't die and was instead transmatted into a Wirrn. There is some genuinely fantastic stuff here and the way the characters interact is all very interesting. Fantastic performances all round. Flip is really oddly written though, I'm not sure if I missed some backstory where she used to fly planes because for some reason she can fly a plane quite easily.

Overall it's not a bad story as is, it's only fault is being generic. I'm just disappointed that they didn't do something more interesting with the setting rather than bringing back the Wirrn.

Next Story: Vortex Ice