The Doctor (Christopher Eccleston) meets the first woman awarded the Nobel Peace Prize and runs into his eighth incarnation’s old friends, Liv Chenka (Nicola Walker) and Tania Bell (Rebecca Root). But first, the Time Lord faces the Sea Devils... in space!

Doctor Who –The Ninth Doctor Adventures: Hidden Depths is now available to own as a collector’s edition CD box set (+ download for just £24.99) or a digital download only (for just £19.99), exclusively here.

Joining the glittering guest cast is Ted Lasso’s Jeremy Swift, Olivier Award-winner Jamie Parker, BAFTA-nominee Diana Quick, Coronation Street actor Sasha Behar, and Big Finish’s creative director Nicholas Briggs as the Sea Devils.

From a moon with poison seas, to a 19th-century health spa, even somewhere as every day as a furniture store on a Sunday afternoon - there are always hidden depths and unseen dangers to uncover!

The three rollicking adventures in this box set are as follows:

The Seas of Titan by Lizbeth Myles

Out on Saturn’s moon, Titan, an outpost all but forgotten by Earth struggles on against the odds.

As the Doctor joins explorers deep in the methane seas, they discover a hidden civilisation. But will the Sea Devils prove to be the colony’s salvation or its final destruction?

Lay Down Your Arms by Lisa McMullin

1864. Instead of relaxing at the Bad Homburg Spa, its visitors are fighting. And Bertha Kinzky, housekeeper to Alfred Nobel, is appalled. Perhaps the mysterious Herr Schmidt can help?

Soon, Bertha is contending with aliens, as well as her mother’s matchmaking, as she and the Doctor try to keep the peace.

Flatpack by John Dorney

Liv Chenka and Tania Bell are spending Sunday afternoon on that most traditional of couple activities. Furniture-shopping!

But just how long has London’s newest Flatpack store been open? Who is its mysterious manager? And is it even Sunday? Liv is about to run into a very old friend...

Christopher Eccleston said: “The Seas of Titan was quite surreal to record, even by the standards of Doctor Who. It was a fun atmosphere and I find that laughter between takes drives the work. There’s an injection of adrenaline that you can take into it with a sense of play and fun.

“Lay Down Your Arms is a real ensemble piece, with very cleverly crafted comedic exchanges. It’s very high on the humour with quite a dark heart. I love what Lisa McMullin’s done.

“Flatpack is brilliantly written with the complexity of the science and the cleverness of the idea. It had the Doctor befuddled - which was useful because I was befuddled playing him. It was nice doing something different, though. I really enjoyed it.”

Doctor Who –The Ninth Doctor Adventures: Hidden Depths is now available to own for just £24.99 (collector’s edition CD box set + download) or £19.99 (download only).

Big Finish listeners can save money by purchasing all four volumes of The Ninth Doctor Adventures series two in a bundle from just £78.

Doctor Who –The Ninth Doctor Adventures triple LP vinyls can be ordered at £35.99 each or £132 for the bundle of all four albums and are strictly limited to a pressing of 1,000 per volume. Please note: the vinyl editions do not include any behind-the-scenes extras. However, listeners purchasing vinyl LP editions will receive a download of the story automatically and be given access to the CD edits as a bonus download. Episodes will be edited specifically for the vinyl format, presented as 2 episodes, one on each side, each with opening and closing music. All pre-orders of the vinyl will also receive the behind the extras as a bonus download.

All the above prices include the special pre-order discount and are subject to change after general release.

Big Finish is currently operating a digital-first release schedule. The mail-out of collector’s edition CDs may be delayed due to factors beyond our control, but all purchases of this release unlock a digital copy that can be immediately downloaded or played on the Big Finish app from the release date.