TDP 1221: 10th #DoctorWho: Once and Future: The Union

https://bbvproductions.co.uk/products/Faction-Paradox-The-Confession-of-Brother-Signet-AUDIO-DOWNLOAD-p389922366 This title was released in October 2023. It will be exclusively available to buy from the Big Finish website until 31 December 2023, and on general sale after this date. The Doctor responds to a distress call from his granddaughter, Susan, taking him to the Diamond Array: a huge multidimensional space station. Once there, his instability increases, as the Fourth and Eighth Doctors discover the Array's terrible purpose. Meanwhile, River Song has made a deadly alliance to try to save her husband. And the truth about the Doctor's degeneration will finally be revealed.