Starring: Patrick Macnee, Diana Rigg, Noel Purcell, Albert Lieven, Geoffrey Palmer, Talfryn Thomas, John Kidd, and Sue Lloyd
Director: Sidney Hayers
Rating: Seven of Ten Stars
A doomsday prophet (Purcell) and a winery with secret, highly scientific production methods are at the center of the mystery when agents John Steed (Macnee) and Emma Peel (Rigg) are tasked with uncovering how a man drowned in the middle of an empty field.
This is another excellent episode that features a tight script; a brilliant mix of sci-fi and investigative secret agent action; and an assortment of interesting and quirky characters that make it tricky to pinpoint who the bad guys are and what they are actually up to until the Big Reveal. It also features another nice "damsel in distress" riff along the same lines as what we had in "The Gravediggers", but with a stronger sense of danger than comedy. There's also a great bit with Steed's steel-plated trick bowler as an adjunct to that business.
Character-wise, the wisecracking between Steed and Mrs. Peel is topnotch, and some of the incidental characters here are so interesting and well-acted that I sorry to see them meet a violent end, or I wished there could have been a reason for them to make reappearance in a future episode--Noel Purcell's doomsday prophet Jonah Barnard being prime among these. The different approaches that Steed and Peel take to investigating the mysterious deaths also lend a great deal of entertainment value to this episode--Peel remains methodical and cautious in her approach, while Steed starts out that way but quickly starts resorting to antics to see what he can stir up. At the end, though, it's a combination of the two approaches that leads to the good guys ultimately winning the day. Peel's dignified unflappability also leads to one of the most amusing (and possibly one of the most British) witness interviews ever committed to film. Another nice bit in this episode is the way Steed and Peel turn firmly to science to help them figure out what's happening with the weather around the winery--which also gives the writers an opportunity to show that Mrs. Peel is also knowledgeable in the field of meteorology.
As great as this episode is, it's another instance of where the creators don't quite pull off the ending. It's got a dramatic set-up and the location in which it unfolds should make it one of the deadliest fights our heroes have ever been in--since they are exchanges punches with the bad guys at the very heart of a mad science experiment that has claimed three lives that we know of--but it's almost like the actors, director, and writers have forgotten what's happened earlier in the episode.
All in all, though... some 55 years after it first aired, "A Surfeit of H2O" is still highly entertaining and well worth the time you'll spend watching it.