Darkness and Light (audio story)

 was the fourth and final story in the audio anthology Rage of the Time Lords, produced by Big Finish Productions. It was written by David Llewellyn and featured Derek Jacobi as and Paul McGann as the Doctor.

Publisher's summary
With 's plans near completion, his victory is threatened by the presence of his greatest friend and enemy: the Doctor.

Plot
to be added

Cast

 * The Master - Derek Jacobi
 * The Doctor - Paul McGann
 * Mandrake - Dominic Thorburn
 * Crantz - James MacCallum
 * Stern - Lu Corfield
 * Turma - Ricky Nixon

Worldbuilding

 * Mandrake reports to a Celestial Intervention Agency base on Mount Perdition.
 * The Doctor and the Master shared an adventure on Machasma in their youth which involved using sonic agitation.

Continuity

 * The Master uses a genetic loom. (PROSE: Cat's Cradle: Time's Crucible et al.)
 * Rassilon discovered the secret of immortality. (TV: The Five Doctors)
 * The War Council asked The Master for anything that could win the war. (TV: The Day of the Doctor)
 * The Master has come to the conclusion that the universe is far more interesting with The Doctor in it. (TV: The Five Doctors)