Reverse the polarity, Sweetie! Third Doctor joins River Song’s U.N.I.T. audio adventures

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Tim Treloar’s take on the Third Doctor and River Song collide in a brand new box set of audio adventures from Big Finish Productions.

Story details were revealed back in July for The Diary of River Song: New Recruit, announced earlier this month and released in October 2021. These full cast audio adventures find River Song spending some time on Earth, helping UNIT as their new scientific advisor. And, alongside working with the previously announced Brigadier Lethbridge-Stewart (Jon Culshaw) and Dr. Liz Shaw (Daisy Ashford), River Song’s (Alex Kingston) timeline crosses with the Doctor’s flashy third incarnation – but what will he make of his wife from the future? 

The Diary of River Song: New Recruit is available to order at £24.99 as a collector’s edition four-disc CD box set or £19.99 as a download, exclusively from

UNIT – the secret organization established to deal with the odd and unexplained on Earth and beyond.

The redoubtable Brigadier Lethbridge-Stewart leads the troops, and for scientific guidance relies on two brilliant advisors: Cambridge genius Dr Elizabeth Shaw, and UNIT’s newest recruit – that mysterious traveler in time and space known as… River Song. 

‘The Blood Woods’ by Lizbeth Myles 

With the Doctor indisposed, Liz is a little put out to find that the Brigadier has brought in another scientific advisor to take his place.

But when Liz and River investigate otherworldly goings-on in an English village, they soon find themselves relying on each other to survive. 

‘Terror of the Suburbs’ by James Kettle 

Liz has moved house. It seems she’s found a suburban utopia – until River Song arrives. 

There is more to Fetter Bailey than manicured lawns and endless soirees. Dangerous creatures prowl the hedgerows, and something lurks in the freezers… 

‘Never Alone’ by Helen Goldwyn 

River believes Intertraxia is ahead of its time, but it’s already shipping innovations in entertainment and computing around the world.

When a dead man is found dead with alien technology implants, UNIT investigates. Liz and River are about to discover that those connected to the network are never alone… 

‘Rivers of Light’ by Lisa McMullin 

In a Yorkshire mining town, strange temporal distortions and rivers of light crossing forests are enough to get the Brigadier’s attention, and UNIT is mobilized. 

But the Doctor is back, and he wants to know who’s been messing around in his laboratory. River’s reasons for being on Earth are about to be revealed… 

Script editor Matt Fitton said: “Season Seven of Doctor Who had a special flavor all of its own, and here we’ve stirred in the added ingredient of River Song, so we can see a bit more of Dr. Elizabeth Shaw saving the world with UNIT! With the Doctor away, the Brigadier now has two brilliant, clever women by his side to offer scientific advice on the odd and unexplained.  

“I’ve always thought the character of Liz was gone too soon on TV, and it’s wonderful that we now have Daisy Ashford giving her more adventures. What will she make of River – someone with the capacity to be equally as infuriating as the Doctor? And how will the Third Doctor himself react, when he finds a cuckoo in his nest?”

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