The Mind of Evil might just be Doctor Who at its greatest attempt to be an action-adventure show with a little bit of science fiction thrown in! The story is split between Stangmoor Prison and a Peace Conference for which UNIT is providing security (except for when everyone races off to the prison for the back half of the story). The Master has built a machine to harvest evil feelings, but also wants to steal a missle and blow up the conference! Looks, there's really a lot going on here and we haven't even gotten to the dragon...so get ready for some great faces from Pertwee and let's dive in!!