Steed and Tara are called in when several forestry experts are murdered. It turns out that the dead men had all stumbled onto a diabolical plan to destroy the earth's foliage with a strain of synthetic dry rot. As the villains try to hold up England for a billion pounds, the Avengers do battle with the bad guys' minions. Guest star Eric Barker steals the show as the eccentric Mr. Pym. Written by Dave Freeman, "The Rotters" was first seen in England on January 8, 1969 -- some three weeks after its American TV debut on December 16, 1968. ~ Hal Erickson, Rovi