Signs (audio story)

 was the third full cast audio story in the first series of The Diary of River Song, released in 2015 by Big Finish Productions.

Publisher's summary
River Song is on the trail of the mysterious, planet-killing SporeShips.

Nobody knows where they come from. Nobody knows why they are here. All they do know is that wherever the SporeShips appear, whole civilisations are reduced to mulch.

But River has help. Her companion is a handsome time-travelling stranger, someone with specialist knowledge of the oddities and dangers the universe has to offer. For Mr Song has a connection to River’s future, and he would never want his wife to face those perils alone…

Plot
to be added

Cast

 * River Song - Alex Kingston
 * Mr Song - Samuel West

Continuity

 * Mr Song references the Doctor's Five Hundred Year Diary while impersonating him. (PROSE: The Three Paths et al)
 * River says, "Spoilers!" (TV: Silence in the Library et al)
 * River refutes the concept of fixed points when she's around. (TV: The Wedding of River Song)
 * River refers to how she'd still be "immortal" if she hadn't given up her remainingregenerations for the Doctor and wonders who she'd be if she still had them. (TV: Let's Kill Hitler) She believes her remaining regenerations gave the Doctor "a few more faces," including Mr Song's.
 * The Sarah Jane was Mr Song's ship, named after the Doctor's companion, Sarah Jane Smith. (TV: The Time Warrior et al)
 * Mr Song, pretending to be the Doctor, recalls a trip "he" and River took to Florana. River remembers they encountered a rude tour guide, leaving it unclear whether it was a trip she went on with the Doctor or a trip she took with Mr Song while he was pretending to be the Doctor. (TV: Invasions of the Dinosaurs et al)
 * River calls Mr Song "Sweetie." (TV: Silence in the Library et al)