The Fifth Traveller (audio story)

 was the second story of the third series of The Early Adventures, produced by Big Finish Productions. It was written by Philip Lawrence, narrated by William Russell and Maureen O'Brien and featured the First Doctor, Ian Chesterton, Barbara Wright and Vicki Pallister.

Publisher's summary
The Doctor, Ian, Barbara, Vicki and Jospa land the TARDIS on the homeworld of the Arunde. Emerging into the jungle that covers the planet and encountering the strange wildlife dwelling within, the travellers are unaware that the true rulers live high above them in the trees.

The ape-like members of the tribe are in trouble. The last Matriar's nest has been lost to the surface, and the people are hungry... Maybe these strangers may be responsible. And some believe they may be salvation.

The TARDIS crew are about to find themselves in the middle of somebody else's battle. But there's more at stake than even they can know.

Hunted (1)
to be added

Enemy in the Dark (2)
to be added

The Hidden Soldier (3)
to be added

The Boy (4)
to be added

Cast

 * Ian/The Doctor - William Russell
 * Vicki/Narrator - Maureen O'Brien
 * Barbara/Fula - Jemma Powell
 * Jospa - James Joyce
 * Sharna - Kate Byers
 * Gark - Elliot Cowan
 * Krube - Orlando James

Worldbuilding

 * In the false history implanted by the Vervidic agent Jospa, he was saved from the waste pits on Earth in 3064, before helping the TARDIS crew shut down some factories.
 * Vicki runs into the TARDIS living quarters when evading Jospa.

Continuity

 * Ian and Barbara hope to return to their native time period (TV: The Chase) while Vicki feels there is nothing left for her in hers. (TV: The Rescue)
 * Barbara mentions Ian's gold pen, which he lost on Vortis. (TV: The Web Planet)
 * Jospa inserts himself into the Doctor, Ian, Barbara and Vicki's memories of their recent travels to Vortis, (TV: The Web Planet) Rome, (TV: The Romans) Byzantium, (PROSE: Byzantium!) and China. (PROSE: The Eleventh Tiger)
 * This is a similar gambit to Adam Smith's infiltration of Torchwood Three. (TV: Adam)
 * Ian remembers marking schoolwork at Coal Hill the night before he met the Doctor. (TV: An Unearthly Child)
 * Jospa reminds the Doctor of his promise to return to Susan one day. (TV: The Dalek Invasion of Earth)