Doctor Who: The Third Doctor Adventures Doctor Who: The Third Doctor Adventures "The Third Doctor Adventures" is a Big Finish Productions audio play series based on the TV show Doctor Who. It sees the return of Katy Manning as Jo Grant and Richard Franklin as Mike Yates, while the voice of the Third Doctor is performed by Tim Treloar replacing the original actor, Jon Pertwee, who died in 1996. The first set of stories was released in September 2015. A second and third volume were released November 2016 and August 2017 respectively. A fourth volume was released in March 2018. A fifth volume was confirmed in
Enlightenment (Doctor Who) serial "Mawdryn Undead", and concluding with "Enlightenment"), the enemy was the Black Guardian, who was last encountered by the fourth incarnation of the Doctor at the conclusion of The Key to Time saga in the 1979 serial "The Armageddon Factor". The story also saw the return of the White Guardian, who had also not been seen since 1979. After penning a number of radio and TV scripts, including episodes of "Crossroads" and "Waggoner's Walk", Barbara Clegg submitted a story idea to "Doctor Who" script editor Eric Saward, an acquaintance from the BBC drama department. Interested in writing for the series,