There are a lot of nice touches in Planet of Evil …

Terror of the Zygons would have been the perfect end to the Fourth Doctor's first season …

For the third story in a row, the title gives away the main foe …

It would be hard for me to overstate how important Genesis of the Daleks is to me as a Doctor Who fan …

Doctor Who's penchant for giving away the villain in the title of the story can be quite annoying at times. Whilst The Sontaran Experiment is a good title, it does rather ruin the surprise. …

Received wisdom has it that The Ark in Space was where Doctor Who started to tell a new type of story – where Doctor Who as Gothic horror began …

In much the same way that throwing the Doctor into an adventure with a familiar adversary helped aid the audience's transition into the Second Doctor's run, starting the Fourth Doctor off with a traditional UNIT story was probably a wise idea …