Coming in September, Doctor Who: The Sixth Doctor – The Last Adventure tells the emotional ending of Colin Baker's Sixth Doctor, who faces his final battle with the Valeyard (Michael Jayston), the malevolent distillation of the Doctor's negative impulses. Click here to listen to the trailer.

Joining Colin across four linked adventures are old companions and friends from across his entire time as the Doctor; as well as a brand new one. Miranda Raison makes her debut as Constance Clarke in opening instalment The End of the Line by Simon Barnard and Paul Morris; in which a commuter train has lost its way. (Constance’s introductory story, Doctor Who: Criss-Cross, will be released in September)

Next up, Colin is reunited with India Fisher as Charlotte Pollard for The Red House by Alan Barnes. Then, in Stage Fright by Matt Fitton, the Doctor and Flip Jackson (Lisa Greenwood) catch up with victorian investigators Jago and Litefoot (Christopher Benjamin and Trevor Baxter) and together investigate a theatrical performance that has echoes of the Doctor's past lives...

Events all come down to a desperate final stand against the Valeyard in The Brink of Death by Nicholas Briggs. The Sixth Doctor races to save his companion Mel (Bonnie Langford) from the Valeyard's ultimate scheme – with all his futures hanging in the balance.

The physical version of Doctor Who: The Sixth Doctor – The Last Adventure can be pre-ordered today for just £40, shipping in limited edition packaging with free UK postage. A download version is also available for just £20.

It may be his last adventure, but the Sixth Doctor's journeys continue in September with Doctor Who: Cross-Cross, the first of an all new trilogy. Find more details on this upcoming release here.

And to hear more from the man behind the Sixth Doctor, check out This is Colin Baker, our upcoming audiobook release in which Colin is interviewed by Nicholas Briggs about his life and career in a candid two-hour interview. All pre-ordered copies will also be signed by Colin.