Medicinal Purposes (audio story)

 was the sixtieth story in Big Finish's monthly range. It was written by Robert Ross and featured Colin Baker as the Sixth Doctor and Maggie Stables as Evelyn Smythe.

This story marked the first appearance of Robert Knox played by Leslie Phillips. This is the second and final Big Finish audio drama in the main range in which David Tennant appears.

Publisher's summary
Edinburgh, 1827.

The infamous body snatchers William Burke and William Hare are at large. The local prostitutes dull their fear with cheap whisky. The graveyard owls are hooting. Business is good.

When accidental tourists the Doctor and Evelyn Smythe stumble upon one of Britain's most lurid, illuminating chapters in history, a simple case of interest in the work of dedicated man of science Doctor Robert Knox, quickly turns sour.

Just what is that time-bending Scots mist? Whatever it is may put the very fabric of the universe under threat...

As always.

Plot
to be added

Cast

 * The Doctor - Colin Baker
 * Evelyn Smythe - Maggie Stables
 * Doctor Robert Knox - Leslie Phillips
 * Daft Jamie - David Tennant
 * Mary Patterson - Glenna Morrison
 * William Burke - Kevin O'Leary
 * Billy Hare - Tom Farrelly
 * Old Woman - Janie Booth

Worldbuilding

 * The Doctor and Evelyn visited Greyfriars Graveyard.

Individuals

 * Daft Jamie's name and nationality causes the Doctor to recall his former companion Jamie McCrimmon.
 * The Doctor refers to the Nazi dictator Adolf Hitler.
 * The Doctor mentions Dr Christiaan Barnard.
 * Evelyn mentions Roger Bannister.
 * Knox is contemptuous of the Time Lords and their 'dominion' over time, and says it doesn't exist.

TARDIS

 * Knox bought his Type 70 TARDIS from a Nekkistani on Gryben.
 * Knox's TARDIS has a working chameleon circuit.

Literature from the real world

 * The Doctor superstitiously refers to Macbeth as "the Scottish Play."
 * Dr. Knox refers to The Strange Case of Dr Jekyll and Mr Hyde by Robert Louis Stevenson, who would not be born until the 1850s. The Doctor realised that he mentioned the novel as a test for Evelyn whom he correctly believed may be another time traveller.

Continuity

 * The Doctor and Evelyn would encounter Knox once again in Washington DC in April 1865. (AUDIO: Assassin in the Limelight)
 * The Doctor would refer to Macbeth as "the Scottish Play" again during his eighth incarnation. (AUDIO: The Next Life, The Book of Kells)