Finsey

Mother Finsey was a woman who was fascinated by 's evil, to the extent that she spent some time travelling with him.

Biography
Mother Finsey travelled with as his companion until he tried to kill her, having tired of her company. She survived and continued to idolise the Master, even musing that she would have lost respect for him had he not tried to eliminate her, but was left blind by the attempt. She began using specially-designed lenses which allowed her to see in infrared, although she did learn how to cope without them.

Using her lenses, which allowed her to imitate the Master's hypnotic abilities, Mother Finsey created false religions and manipulated the converts into giving her all their worldly possessions before arranging for their deaths in a "religious event". On Ephros, she planted rare fire-worms beneath the surface, accelerating the planet's natural temperature and bringing about an explosion which she called the Transcendence. Shortly before the explosion was to occur, she met the Third Doctor and Jo Grant.

As Mother Finsey attempted to escape in a mining cruiser, she was delayed when she had to reprogram the ship's hyperdrive, seemingly resulting in her death when the Doctor used a transmat to send the fire-worms into space without having the chance to calibrate it to avoid any other form of life. (AUDIO: The Transcendence of Ephros)