The Last Post (audio story)

The Last Post was the fourth release in the seventh series of The Companion Chronicles.

Publisher's summary
People are dying. Just a few, over a period of months... but the strange thing is that each person received a letter predicting the date and time of their death.

Throughout her time as the Doctor’s assistant, Liz Shaw has been documenting these passings.

Her investigation ultimately uncovers a threat that could lead to the end of the world, but this time Liz has someone to help her.

Her mother.

Cast

 * Liz Shaw - Caroline John
 * Dame Emily Shaw - Rowena Cooper

Continuity

 * Liz tells her mother that the Earth is being invaded by "living plastic creatures." Emily laments that there was an exhibition of senior civil servants in Madame Tussauds. (TV: Spearhead from Space)
 * Liz refers to the evacuation of London during the Cyberman invasion in 1975. (TV: The Invasion)
 * While at Wenley Moor nuclear research facility, Liz writes to her mother assuring her that a vaccine has been found the Silurian virus and telling her that Dr. Charles Lawrence and Edward Masters were sent letters predicting the exact dates and times of their deaths. (TV: Doctor Who and the Silurians)
 * Emily writes to Liz that she met Sir Charles Grover at one of her committee meetings, who claimed that the Silurian virus was a portent of things to come. (TV: Invasion of the Dinosaurs)
 * The Brigadier is preparing for the World Peace Conference. (TV: The Mind of Evil)
 * Emily saw Liz on BBC3 over the shoulder of the reporter John Wakefield before the launch of the Recovery 7. (TV: The Ambassadors of Death, PROSE: Who Killed Kennedy) Professor Bruno Taltalian and Sir James Quinlan were among those who received letters predicting the exact dates and times of their deaths. (TV: The Ambassadors of Death)
 * Emily refers to Sir Keith Gold (TV: Inferno) and Sir Reginald Styles (TV: Day of the Daleks).
 * Liz describes Professor Stahlman as "some damned fool [who] is trying to drill to the centre of the Earth" while Emily describes him as "an old goat." (TV: Inferno)
 * Prior to his death, General Andrews was the governor of Stangmoor Prison. (TV: The Mind of Evil)
 * The processing banks of the Apocalypse Clock were salvaged from WOTAN in the Post Office Tower following its destruction on 20 July 1966. Like WOTAN, it comments that "Doctor Who is required." Upon his arrival, the Doctor recognises the components salvaged from WOTAN. (TV: The War Machines)