Every day this week, Big Finish is celebrating its unforgettable crossover adventure The Worlds of Big Finish, with special offers featuring the cast of this celebratory release! Pick up the story today for only £20 on CD or £15 to download and check back everyday for a new round of offers!

Across the universe, Bernice Summerfield (Lisa Bowerman) travels the stars on the hunt for ancient treasures and incredible artefacts; while meeting great friends and facing greater enemies! The Seventh Doctor's former companion is all ready to save the day; even after eighteen years of Big Finish adventures! Save on every one of Benny's expeditions today with 24 hours of amazing offers on the following titles:

• All Bernice Summerfield Single Disc Releases are only £3 each on CD (please note, these do not include digital downloads)

• Bernice Summerfield: Epoch Box-Set featuring stories by Mark Wright, Jacqueline Rayner, Tony Lee and Scott Handcock for £20 on CD and £15 to download.

• Bernice Summerfield: Road Trip Box-Set featuring stories by Christopher Cooper, Simon Barnard, Paul Morris and David Llewellyn for £15 on CD and £10 to download.

• Bernice Summerfield: Legion Box-Set featuring stories by Tony Lee, Scott Handcock and Miles Richardson for £15 on CD and £10 to download.

• Bernice Summerfield: New Frontiers Box-Set featuring stories by Xanna Eve Chown, Alexander Vlahos and Gary Russell for £15 on CD and £10 to download.

• Bernice Summerfield: Missing Persons Box-Set featuring stories by Hamish Steele, Martin Day, David Llewllyn, James Goss, Gary Russell and Scott Handcock for £20 on CD and £15 to download.

• Doctor Who – The New Adventures of Bernice Summerfield Volume 1 Box-Set (featuring stories by Nev Fountain, Una McCormack, Guy Adams and James Goss) is still available at the permanently reduced price of £20 on CD and discounted to £15 to download.

• Doctor Who – The New Adventures of Bernice Summerfield Volume 2: The Triumph of Sutekh Box-Set featuring stories by Guy Adams, Justin Richards, James Goss and Una McCormack for £20 on CD and £18 to download.

• Doctor Who: The Shadows of the Scourge by Paul Cornell, permanently reduced to £2.99 to download.

• Doctor Who: The Dark Flame by Trevor Baxendale, permanently reduced to £2.99 to download.

• Doctor Who: The Company of Friends by Lance Parkin, Stephen Cole, Alan Barnes and Jonathan Morris for £5 on CD and to download.

• Doctor Who – The Novel Adaptations: Love and War by Paul Cornell, adapted by Jacqueline Rayner for £5 on CD and to download.

• Doctor Who – The Novel Adaptations: The Highest Science by Gareth Roberts, adapted by Jacqueline Rayner for £12 on CD and £10 to download.

• Doctor Who – The Novel Adaptations: Theatre of War by Justin Richards for £12 on CD and £10 to download.

• Doctor Who – The Novel Adaptations: All-Consuming Fire by Andy Lane, adapted by Guy Adams for £12 on CD and £10 to download.

• Doctor Who – The Companion Chronicles: Bernice Summerfield and the Criminal Code by Eddie Robson for £5 on CD and £3 to download.

You can also pick up these titles as part of multiple Bernice Summerfield Bundles, offering various collections of titles together with free UK postage. Our Doctor Who – New Adventures of Bernice Summerfield Vol 01-03 bundles also includes a pre-order of August's eagerly anticipated Doctor Who – The New Adventures of Bernice Summerfield Volume 3: The Unbound Universe box-set, while our Doctor Who – Novel Adaptations featuring Bernice Summerfield bundles include December 2016's Doctor Who: Original Sin.

You can also enjoy Book Bonanza Bundles of our Bernice Summerfield Books, which are also available individually at the permanently reduced price of £3 each.

If you've never encountered Bernice Summerfield before, you can check out our guide to her friends and adventures, now live on the Big Finish website. True aficionados can also pick up a copy of Simon Guerrier's Bernice Summerfield: The Inside Story: a whopping 318-page hardback guide to Benny and her first eighteen years of adventures!

And don't forget to hear Benny take the lead in The Worlds of Big Finish, stil avaialble this weekend at a special offer price!