Old Flames (short story)

Summary
The Doctor and Sarah Jane are invited to Lady Huntingdon's ball where The Doctor comes face to face with renegade time lady Iris Wildthyme and discovers that one of the guests could be an alien cat.

Characters

 * The Doctor
 * Sarah Jane Smith
 * Iris Wildthyme
 * Captain Turner
 * Bella Huntingdon
 * Lady Huntingdon
 * Rector Adams

Continuity

 * Iris (says of Sarah) "She's not the one I didn't get on with", therefore this could take place after PDA: Verdigris (as Iris met and failed to get along with Jo Grant), but it could also be an unchronicled adventure mentioned in BFA: Excelis Dawns when she met Tegan Jovanka "the shrill Australian woman".
 * Sarah met the Exxilons in DW: Death to the Daleks.

Timeline
For the Doctor:
 * This story occurs after DWM: The Naked Flame
 * This story occurs before BBCR: Exploration Earth

For Iris Wildthyme:
 * This story occurs after EDA: Verdigris
 * This story occurs before BFA: Excelis Dawns