Alien Heart (audio story)

 was a full cast audio story released on 19 April 2017 by Big Finish Productions. Shorter than the vast majority of stories in the Doctor Who monthly range, it appeared alongside Dalek Soul. Alien Heart ended in a cliffhanger leading directly into Dalek Soul.

Coincidentally, Alien Heart was set during the Dalek-Movellan War, a conflict revisited on television in The Pilot just four days prior to this story's release.

Publisher's summary
In the TARDIS, the Doctor and Nyssa stumble across a trail of ten destroyed worlds, all of them obliterated by means of some utterly monstrous but utterly unknown device. The planet Traxana would seem to be next in line to suffer the same fate. But when the TARDIS lands on an outpost on Traxana's moon, Nyssa is carried away by a tide of giant green arachnoids, leaving the Doctor behind...

And the coming menace is closer than he thinks.

Plot
to be added

Cast

 * The Doctor - Peter Davison
 * Nyssa - Sarah Sutton
 * Sonderal - Eve Webster
 * Elthar - Geoffrey Newland
 * Theebe - Alex Tregear
 * The Daleks - Nicholas Briggs

Continuity

 * Nyssa refers to the destruction of Traken in 1981 by the entropy wave. (TV: Logopolis)
 * The Doctor once again describes himself as a "citizen of the universe." (TV: The Daleks' Master Plan)
 * The Doctor notes that Nyssa is highly adept in the field of bioelectronics. (TV: The Keeper of Traken)
 * Sonderal knows of the Daleks' history with Earth. (TV: The Dalek Invasion of Earth)
 * The Movellans defeated the Daleks in a battle in Traxana's sector of space during the Dalek-Movellan War. (TV: Destiny of the Daleks)
 * The Doctor says, "When I say 'run', run". (TV: The Power of the Daleks, et. al)
 * Nyssa has previously encountered the Daleks on several occasions. (AUDIO: The Mutant Phase, Renaissance of the Daleks, Plague of the Daleks)
 * After they were captured by the Daleks, the Doctor and Nyssa were transported to Mojox and numerous duplicates of them were created. However, they were soon able to escape. (AUDIO: Dalek Soul)