Someone I Once Knew (audio story)

 was the fourth story of the audio anthology, The Diary of River Song: Series Four. It was written by John Dorney and featured Alex Kingston as River Song and Tom Baker as the Fourth Doctor.

Publisher's summary
River has tried in vain to keep the Discordia away from the Doctor. Now, as devils run riot through universal spacetime, her own past with her husband is being rewritten. There is one last hope for the universe. A love story – but one that must find an ending...

Plot
to be added

Cast

 * River Song - Alex Kingston
 * The Doctor - Tom Baker
 * Dante - Nicholas Asbury
 * Rakkezar / Drayl - Nigel Anthony
 * Garen / Galerayna - Nathalie Buscombe
 * Gammarae - Adele Lynch

Uncredited cast

 * Queen - Nathalie Buscombe

Worldbuilding

 * River tries to pretend that she is a future incarnation of Romana, but the Doctor mentions that he has not yet met Romana.
 * River invokes Schrödinger's cat while explaining to the Doctor how the Time Lords are no longer around anymore, but also are.

Continuity

 * The Eighth Doctor would later remember these events temporarily. (AUDIO: Songs of Love)
 * The Doctor says he is awfully good at rescuing people. (TV: The Rescue)
 * The Doctor addresses River as his wife (TV: The Wedding of River Song, The Name of the Doctor) and tells her "hello sweetie." (TV: The Husbands of River Song)
 * River uses her Vortex manipulator (TV: The Pandorica Opens et al.) and her sonic trowel. (TV: The Husbands of River Song et al.)
 * The Doctor remembers leaving Gallifrey through the cloisters, (TV: The Name of the Doctor, AUDIO: The Beginning) pretending to be Salamander, (TV: The Enemy of the World) and doing Venusian martial arts behind Alistair Gordon Lethbridge-Stewart. (TV: The Mind Robber et al.)
 * The Doctor was on Gallifrey last week. (TV: The Deadly Assassin)