Doctor Who: The Mind of Evil by Terrance Dicks

The Third Doctor and his companion, Jo, visit Stangmoor prison where a Professor Kettering is using a device on criminals that, it is claimed, drains all evil and negative impulses from their minds. The machine is used on a prisoner named Barnham who, to the Doctor’s horror, is successfully pacified by being turned into a drooling imbecile….

Survivors by Terry Nation

In a matter of a few weeks a virus has spread across the entire planet, killing off almost all of the human population. The remaining survivors are in a silent world with no electricity or society or infrastructure. They form together communities and try to outlast the chaos as the world begins to fall into…