Tom Baker, Lalla Ward and John Leeson star in a new Fourth Doctor Adventure, featuring a showdown with a old enemy.

Years ago, the Fourth Doctor and Romana faced the might of the Conglomerate; an intergalactic super-corporation, controlled by the ruthless Cuthbert (David Warner). Stranded in Earth's past thanks to the Doctor's interference, the corrupted tycoon has been plotting his revenge: and his chance has finally come! Listen to the trailer for this new story below:

On a brisk winter’s morning in 1850s Yorkshire, Cuthbert, head of the intergalactic business known as 'The Conglomerate' prepares to hijack a very special train.

In the far future, his assistant, Mr Dorrick is awoken by howling alarms. There is a problem with the Quantum Gateway.

In the TARDIS, the Doctor, Romana and K9 detect strange distortions in the Vortex, an energy stream coming from a strange creature called a Laan.

The threads of a plan centuries in the making are coming together. But who is behind this plan? And can anyone possibly escape when history is against them?

Written by Nicholas Briggs and starring Tom Baker, Lalla Ward, John Leeson, David Warner, Toby Hadoke, David Troughton, John Dorney, Lisa Bowerman, Jez Fielder and Jane Slavin, Doctor Who: The Pursuit of History is available to buy and download now from the Big Finish website. It will be available on general release from August 30th 2016.

Don't forget that as with the majority of Big Finish releases, CD orders for this title also give access to a complimentary digital copy of the release: so you don't have to wait to enjoy the story! Listen on the move with the Big Finish Player app, now available for iOS devices.

You can subscribe to the whole of the Fourth Doctor Adventures Series Five today to enjoy additional savings, with 2017's Series Six also available to pre-order, and value-for-money bundles available for Series One to Four.

The story continues next month as the travellers' luck finally runs out: one of the TARDIS team is about to die! Listen to the trailer for Doctor Who: Casualties of Time.