The First Doctor, Vicki, and Steven

With both Peter Purves and Maureen O’Brien actively participating in Big Finish, there’s plenty of room for stories with the two of them, even though they didn’t have much TV time together. The end of this section gets a little strange. “The Destroyers” features none of the regular characters, and is a lead-in to “Mission to the Unknown,” which does the same. Then Vicki leaves and Katarina arrives in “The Myth Makers.” Adrienne Hill passed away in 1997, so she’s unavailable, which hadn’t really mattered as Katarina doesn’t really have a place to fit a story...except this is Big Finish, so they added one in 2019, except it’s also a Second Doctor crossover, so I’ll deal with it then.