Chellak and his men attack Jek's base. The Dr crash lands the ship, and must escape from his captors, find the antidote to Spectrox poisoning and save Peri. He does so, but at the cost of his own life.
Did You Know?
has joked on several occasions of how he was "upstaged" by Nicola Bryant
in his last major scene as the Doctor. Before the regeneration hallucination occurs, Davison is lying on the floor and his head is resting by Bryant, who is kneeling beside him. As he is delivering his last few lines, Bryant's loose fitting outfit prominently displays her cleavage. See more
Is this death?
Referenced in The Five(ish) Doctors Reboot