The Deadly Assassin

STORYLINE

"Suddenly and terribly, the Time Lords faced the most dangerous crisis in their long history..."

A mysterious evil is at work on Gallifrey. The President of the Time Lords has been assassinated and the Doctor caught red-handed. An inexorable master plan has been set in motion. There can be no escape.

In order to prove his innocence the Doctor must pursue his enemy into the Matrix, a dream-like repository of knowledge formed from the minds of dead Time Lords. However, he quickly discovers that in the Matrix the real assassin rules and behind this enemy lurks the even more deadlier menace of his old adversary - the Master.