The Battle of Demons Run: Two Days Later (webcast)

 served as a sequel to TV: A Good Man Goes to War and a prequel to The Snowmen. It's notable for explaining Strax's appearance in the latter, as he had died in the former.

Synopsis
In the aftermath of the Battle of Demons Run, a battled-scarred Strax lies dead on the floor — or has he just fainted...?

Plot
Strax is woken up by Vastra and Jenny, and is told that he had not died, simply fainted. He's angry about not having died. Vastra and Jenny then announce that the station is being evacuated, and they offer to take Strax with them back to London.

Cast

 * Strax - Dan Starkey
 * Vastra - Neve McIntosh
 * Jenny Flint - Catrin Stewart

Crew

 * Writer - Steven Moffat

Story notes

 * This story was only made available in the United States of America.

Continuity

 * Strax was shot. (TV: A Good Man Goes to War)
 * Strax teamed up with Vastra and Jenny. (TV: The Snowmen)
 * Strax proclaims that "it's a glorious thing for a Sontaran to die in battle."