In the fourth episode of the six-part story "The Seeds of Death," the Ice Warriors continue to wreak their havoc on the Earth, as Martian seed pods continue to spread death and devastation. Back on the Moon, the Doctor (Patrick Troughton) tries his best to thwart the Ice Warriors' scheme. But in failing to do so, he is threatened with being rematerialized somewhere in Deep Space -- an inescapable death sentence! Originally telecast on February 15, 1969, "The Seeds of Death, Episode 4" was written by Brian Hayles. ~ Hal Erickson, Rovi