Prose Utterly superb. Like a espresso shot of the EDAs, this is a multi-Doctor story with bite as Seventh or as he's described here, "dark and manipulative" remonstrates with Eighth about saving Charley and the implications it has for the universe. As in the BBC books, they absolutely hate one another, philosophical polar opposites on how they should be using their gifts. After being made aware of her presence "Dark and manipulative" clearly sees Charley has a threat that needs to be dealt with and where it not for us already knowing how her stories plays out, it feels as though she might be in mortal danger from this earlier incarnation until Eighth is able to talk him around. Somewhat.
Told from three parallel points of view on the story as per the title, for Charley, for the Doctor and the Baron, the proto-Sabbath who's in charge of the colony with a suspicious technology but wants to rule the universe, it's not quite a Rashomon affair since were just getting more information on the same series of events, rather than anything contradictory. But writer Ian Mond is nevertheless able to utilise the structure to provide a couple of good twists in our expectations ultimately in a way which shows that no matter which daft old face the Doctor has and whatever his methods, they're still the same being inside with the roughly similar goals.
Placement: Another story which references Seasons of Fear but no later, so I'll put it in the gap between that and Embrace the Darkness. One of the strengths of the story is it feels of a piece with the rest of that season with Charley's status an important point.