They may not look scary to you, but the monsters on Doctor Who have scared generations of children to the point where hiding "behind the sofa" has become a meme in the UK. When I first started watching the show, I was baffled by one particular villain -- The Daleks. I didn't understand why they were The Doctor's arch nemesis, or why they were a cultural phenomenon. After I learned more about their backstory, I began to realize that Doctor Who wouldn't work without them. Featuring Robin Bunce, Frank Collins, Nick Randell, Alyssa Franke, and cognitive scientists Deirdre Kelly and Jim Davies, who debate whether it's worse to face a Dalek invasion or an invasion by the other big bad in the Doctor Who universe, The Cybermen. (This is the last episode in a three-part miniseries on Doctor Who.)

Behind the Daleks

Imaginary Worlds is a podcast series about science fiction and other fantasy genres.