David Tennant is to reunite with Alex Kingston for a new series of 'Doctor Who' audio dramas.
The 49-year-old actor - who played the tenth incarnation of the Doctor - and Alex will both feature in the upcoming series, called 'Doctor Who: The Tenth Doctor and River Song'.
Teasing the new adventures, producer David Richardson said: "The Tenth Doctor only met River Song once on TV, and that was at the end of her life.
"But what happened after/before that, after/before the Eleventh Doctor came on the scene?"
David and Alex - who played the part of River Song in the iconic sci-fi series - will star in three adventures for Big Finish this November, beginning with 'Expiry Dating', followed by 'Precious Annihilation' and 'Ghosts'.
A blurb for the upcoming series reads: "The Doctor knows that River Song is a part of his future. A maddening, intriguing, but inevitable part.
"Their lives are becoming inextricably intertwined, but in these early days - for the Doctor at least - they must navigate their relationship without too many spoilers.
"Whatever her past, and the Doctor's future, holds, River will make sure that he has fun untangling the mystery..."
David relished the experience of working with the two stars, revealing they "absolutely sparkled together".
The producer said: "What a joy this run of stories was to make, bringing David Tennant and Alex Kingston together online to record during lockdown, exploring those previously untold meetings between Ten and River.
"Those two actors absolutely sparkled together - it was so clear they were having a blast!"
Although the three new episodes are scheduled for release in November, they are now available to pre-order from the Big Finish website.
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