The Many Deaths of Jo Grant

The Many Deaths of Jo Grant is a Big Finish Productions audiobook based on the long-running British science fiction television series "Doctor Who". In it, Katy Manning reprises her role as Jo Grant from the television series.
The Companion Chronicles "talking books" are each narrated by one of the Doctor's companions and feature a second, guest-star voice along with music and sound effects.
Plot.
A spaceship appears over UNIT headquarters, but the Third Doctor has been injured on a recent journey.