Shadow Planet (audio story)

 was a full cast audio story released on 13 June 2017 by Big Finish Productions. Shorter than the vast majority of stories in the Doctor Who monthly range, it appeared alongside World Apart.

Like Alien Heart, Shadow Planet ended in a cliffhanger leading directly into World Apart.

Publisher's summary
Troubled? Anxious? Tormented by self-doubt? Come to Unity, the psychic planet! From our therapy centre beside Unity's idyllic shores, the Unity Corporation can help you overcome all your problems. How? By using a patented combination of technology and Jungian psychology, we can bring you face to face with your shadow self. The hidden you. The dark you. The you that no-one knows...

Rest assured: the process is perfectly safe. Nothing can possibly go wrong. And that's guaranteed!

Plot
to be added

Cast

 * The Doctor - Sylvester McCoy
 * Ace / Shadow Ace - Sophie Aldred
 * Hex / Shadow Hex - Philip Olivier
 * Mrs Wheeler - Belinda Lang
 * Sandy - Sarah Thom
 * Professor Grove - Nickolas Grace
 * Loglan / Shadow Loglan - Ben Mansfield

Continuity

 * The Doctor once again refers to Hex as "Mister Hex". (AUDIO: The Harvest)
 * The Doctor previously visited another sentient planet, Symbios, during his sixth incarnation. (AUDIO: The Crimes of Thomas Brewster)