Following their recent return in Doctor Who’s Legend of the Sea Devils, the aquatic monsters are back once again in the box set’s opening audio adventure. But this time they’re in space!

The Doctor (Christopher Eccleston) also meets the first woman awarded the Nobel Peace Prize and faces a furniture store with a difference with Liv Chenka (Nicola Walker) and Tania Bell (Rebecca Root).

Doctor Who – The Ninth Doctor Adventures: Hidden Depths is now available to pre-order for just £24.99 (collector’s edition CD box set + download) or £19.99 (download only) here. Alternatively, Big Finish listeners can save money by pre-ordering all four volumes of The Ninth Doctor Adventures series two in a bundle from just £78.

The star-packed guest cast list includes Jeremy Swift (Ted Lasso, Downton Abbey) and Diana Quick (Doctor Who: Scream of the Shalka, Brideshead Revisited) making their Big Finish debuts, Olivier Award winner Jamie Parker (Becoming Elizabeth, Harry Potter and the Cursed Child), Sasha Behar (Coronation Street, Foundation), Nicholas Briggs (Doctor Who) and Yasmin Mwanza (Spider-Man: Far from Home).

Sometimes things lurk below the surface which only the Doctor can see...

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

The three explosive 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...

Producer David Richardson said: “Sea Devils in space! We know from the Eleventh Doctor’s era that the Silurians were a space faring species and now we find a colony of Sea Devils off-world, in the seas of Titan’s largest moon. What a glorious concept. And the Doctor is about to discover that human-Sea Devil relations are no less fractious away from Terra Firma...”

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-scenes extras as a bonus download.

Products are sold in £ sterling on Big Finish’s website but will be converted to local currency upon checkout. All the above prices include the special pre-order discount and are subject to change after general release. From November 2022, new pre-order prices will also be put in place.

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, butallpurchases of this release unlock a digital copy that can be immediately downloaded or played on the Big Finish app from the release date.