Released soon in October, Doctor Who: Doom Coalition 1 begins a whole new series of adventures for the Eighth Doctor (Paul McGann) and Liv Chenka (Nicola Walker), when they are recalled to Gallifrey to deal with The Eleven (Mark Bonnar) – an insane Time-Lord criminal whose previous incarnations live on within his mind.

The Doctor and Liv's journey will see them cross paths with museum researcher Helen Sinclair (Hattie Morahan), battle a mysterious plague with the help of Galileo (John Woodvine) and face a confrontation with unimaginable consequences.

Just premiered at Big Finish Day 7 by series producer David Richardson, you can hear the trailer for this blockbuster new release below.

Doctor Who: Doom Coalition 1, a five-disc boxed set, will be released in October and is available to pre-order today for just £20 on both CD and Download.

The saga continues across three further box sets, with River Song (Alex Kingston) crossing paths with the TARDIS crew in Doctor Who: Doom Coalition 2, available via Big Finish from March 2016. You can order all four sets today as part of a special bundle.