Trail of the White Worm (audio story)

Trail of the White Worm was the fifth story in the first series of Fourth Doctor Adventures. It offered an explanation as to why looked different between the version played by Peter Pratt and the one played by Geoffrey Beevers, revealing that the Master managed to partially reverse his deformity after absorbing some energy from the Eye of Harmony, transitioning him from a more skeletal appearance to a slightly rejuvenated appearance in comparison.

Synopsis
The legend dates back to Roman times, at least: a great White Worm, as wide as a man, slithers out of the rocks of the Dark Peak Gap to take animals, sometimes even children, for its food. When the Doctor and Leela arrive in the wilds of Derbyshire, only to get caught up in the hunt for a missing girl, they soon discover that the legend of the Worm is very much alive — even now, in 1979. Worse still, it seems that the Doctor isn't the only renegade Time Lord on the trail of this deadly and mysterious Worm...

Part one
The Doctor and Leela arrive to their destination to meet a curious sight. Tracks lead into the forest, that appears to be made by some kind of long slithering-beast. Leela steps in mucus, which she realises is from the large beast, which the Doctor accidentally steps in as well. Soon enough, men arrive with vicious dogs, which are hunting the scent of the beast now on the Doctor and Leela. They escape into the woods, after the tracks of the beast. The men try to hunt them down in order to interrogate them.

Part two
 to be added

Cast

 * The Doctor - Tom Baker
 * Leela - Louise Jameson
 * - Geoffrey Beevers
 * Colonel Spindleton - Michael Cochrane
 * Demesne Furze - Rachael Stirling
 * Carswell / Mercenary - John Banks
 * Julie - Becci Gemmell
 * John - Mark Field

Continuity

 * Leela mentions that she has met Romans. (AUDIO: The Wrath of the Iceni)
 * Leela once again refers to the police as "blue guards." (TV: The Talons of Weng-Chiang; AUDIO: The Renaissance Man)
 * The Doctor refers to the Zygons (TV: Terror of the Zygons), the Krynoids (TV: The Seeds of Doom) and the Axons (TV: The Claws of Axos).
 * The Doctor notes that has a slightly less "putrescent" appearance than when they last met on Gallifrey. This can most likely attributed to his own theory that the Master was able convert the energy from the Eye of Harmony and effectively heal himself, albeit partially. (TV: The Deadly Assassin)