Doctor Who episode 518: Nightmare of Eden – Part One (24/11/1979)
Bob Baker is the BAFTA-winning co-writer of Wallace & Gromit: an accolade that might be hard to square with The Sontaran Experiment or The Armageddon Factor, but absolutely makes sense watching Nightmare of Eden. I really like this: it has a seriousness about what it does, but not necessarily the way it does it. The anti-drug message is plainly set out: XYP, aka vraxoin, can lay waste to civilisations. Its teeth-grindingly irritating effects are established in the first scene, as Secker, made idiotic by vraxoin, giggles as he risks the lives of everyone aboard his spaceship. Never have I been happier to see someone meet a grisly end. It might unfair to suggest the show hasn’t worn its social conscience on its sleeve quite so plainly since the Pertwee years, but…