Story: 5/5 - Extras: 4/5
Most often and fondly remembered as "the one with the maggots", Robert Sloman's "The Green Death" is actually notable for a number of reasons, not least of which are a prescient and almost militant anti-globalisation message and, of course, the departure of long-time companion Jo Grant, as played by Katy Manning.
Whatever your political leanings, "The Green Death" is also six episodes of maggot-infested fun, featuring a large number of chronically entertaining Welsh stereotypes, a sinister but whimsical computer, a healthy dose of mind control and also a scientific research station / commune that has set out to end world hunger by developing a new form of high-protein fungus. In charge of this "nuthutch" is the long-haired Professor Clifford Jones, played by Katy Manning's then off-screen partner Stewart Bevan. There is real chemistry between the two characters as a result which, as it turns out, sets events up well for the story's remarkably bittersweet ending.
Back to the important stuff - the effects! As is often the case with 1970s Who, they vary from the sublime to the ridiculous, with some very well realised (and entirely repulsive) giant maggots combined with the all-to-frequent and entirely unconvincing use of CSO technology (also known as Chromakey) that so blights this particular season of the programme. There are some very nice explosions, but watch out for the giant fly in episode six.
Jon Pertwee is on excellent form here, and helps to redeem the show after the slightly dismal outings that were "The Three Doctors" and "Carnival of Monsters". Pertwee's lead, an intelligent script by Sloman and excellent performances from all the key players (particularly Jerome Willis as the sinister Stevens, director of Global Chemicals) combine to deliver the classic slice of Who that season ten so badly needed.
The special features on the DVD are more limited than usual, but an enjoyable commentary is led by a raucous Katy Manning along with producer Barry Letts and script editor Terrance Dicks, whilst the highlight among the featurettes is "Global Conspiracy" - an investigative report into the sinister goings-on in Llanfairfach, starring "The League of Gentlemen"'s Mark Gatiss as Terry Scanlon. Stick around and you'll even learn how to build your very own giant maggot.