The Avengers 3.18: Dressed to Kill Before The Avengers unwrapped its Christmas episode (Season Four’s T oo Many Christmas Trees ), it saw in the New Year. Both are inventive, but Dressed to Kill has the edge, a fancy dress whodunnit set on a train (well, mostly a station; Badger’s Mount, no less), in which Steed and Cathy Gale attempt to root out a typically far-fetched plot to instigate the apocalypse. Steed’s “ very good ” Christmas party is interrupted when business calls; Britain’s early warning radar stations picked up a missile which then faded away (“ The third World War broke out… Another few seconds and you and I would be mutating now ”). The beyond tenuous strands of plot contrivance enable Steed to be in on the situation in advance, such that he has already purchased a plot of land adjoining the sole unaffected radar station, at Smallwood on the Cornish coast (he later recounts the whys of this; it was realised land was being bought up strategically close