Bill swaps chips for microchips in the first instalment of a very clever two-parter.

* * *

Missy has made such a roaring success of rescuing The Doctor’s crew from Mars, being his live-in mechanic, and tearing up suggestively that now she’s being granted her own adventure, complete with reluctant disposables Thing One and The Other One.

Doc has selected a practice scenario worthy of her iniquitous intellect: answering the distress call of a 400-mile-long colony ship that’s narrowly avoided a black hole’s oblivion, and has spent the last 2 days slash 1000-plus years reversing back away from it.

Unfortunately Bill never backed up her heart and a jittery janitor takes her briefly offline. However, with some patients she’s soon back on her feet and joins Mr Razor edging around a bargain-basement hospital. Can Doc rescue her from the conversion theatre and thwart Operation Exodus?

* * *

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