The Ultimate Evil (unproduced TV story)

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The Ultimate Evil was a story planned for Season 23. Along with Yellow Fever and How to Cure It, it is one of the only two stories of the planned season not to be adapted as audio story in Big Finish Productions' Lost Stories series.

Plot background
The story would have been set on the holiday planet Tranquela, where Dwarf Mordant had been using a space ray to make all the good people raging killers.

The TARDIS would have arrived on the planet. Peri would have been attacked and left for dead, while the Doctor would have temporarily fallen under the Dwarf Mordant' powers.

In the end, the Doctor would have Mordant use a good ray on the planet before Mordant escaped. (DOC: The Lost Season)

Legacy

 * This story was adapted into the novel The Ultimate Evil.
 * It is one of the two stories not presently adapted into Big Finish's Lost Stories series from the original Season 23 as Big Finish could not reach an agreement with Daly to produce the story.