The Revenants (audio story)

 was a free Companion Chronicles audio released with a code in DWM 448.

Publisher's summary
The present day: the Orkney Ferry, where Ian Chesterton meets a stranger who he is able to confide in. Decades earlier: the TARDIS lands on Orkney, and Ian and Barbara are abandoned when the Doctor and his ship vanish in front of their eyes. As the pair head for civilization, something is stirring in the treacherous bog lands. And only the ancient Wissfornjarl can protect them...

Characters

 * The Doctor
 * Ian Chesterton
 * Barbara Wright

Continuity
to be added

Timeline

 *  occurs before: DW: The Dalek Invasion of Earth
 *  occurs after: MA: Venusian Lullaby