The End of the Line (audio story)

 was the first full cast audio story in the The Sixth Doctor: The Last Adventure audio anthology released in 2015 by Big Finish Productions. Due to the anthology having its release date pushed forward, it was the first audio released to feature the Doctor's companion Constance Clarke, before her actual debut story was released.

It saw the second time both the Master and the Valeyard have been involved in the same story in a performed production, the first being 1986's The Trial of a Time Lord arc.

Publisher's summary
The Doctor and his latest companion Constance investigate a commuter train that has lost its way...

Plot
The Doctor and Constance Clarke find themselves lost in the fog. Luckily, they’re not too far from Kettering Junction, a Midlands railways station that service a large among of daily commuters heading to London. They’re not alone – passengers and staff from a nearby commuter train have made their way to the station after their train stopped. Meeting a local trainspotter, the Doctor and his fellow travelers soon make several discoveries. One, Kettering Junction should have twelve platforms, not seventeen. Two, each platform holds an identical commuter train, some in pristine condition and other caked with blood. And three, there are distant and bloodcurdling screams coming from the fog – screams that exactly like those of the passengers and staff…

Cast

 * The Doctor - Colin Baker
 * Constance Clarke - Miranda Raison
 * Tim Hope - Anthony Howell
 * - Chris Finney
 * Alice Lloyd - Ony Uhiara
 * Norman - Hamish Clark
 * Hilary Ratchett - Maggie Service

Uncredited

 * The Valeyard - Michael Jayston

Continuity

 * Constance was a WREN during World War II. (AUDIO: Criss-Cross)
 * The Doctor refers to his darker self who he knows is still out there, despite trying to rectify the matter. (AUDIO: Trial of the Valeyard)
 * Accords ding to Norman, the Master has been referring to himself as the "definite article". The Fourth Doctor once referred to himself in the same way. (TV: Robot)
 * After his true identity is revealed, the Master says, "Oh, my dear Doctor, you have been naive." He previously said this after revealing himself to the Fifth Doctor in TV: The King's Demons.