Marcus Cole and Dr. Fraklin investigate the recent curious behavior of a group of Lurkers. The two men discover the presence of an alien parasite, which threatens to take over B5's human population. And while recruiting potential Rangers, Ivanova is saddled with a would-be sweetheart (Joshua Cox) whose misinterprets her intentions. Originally syndicated in America during the week of February 12, 1996, "Exogenesis" was written by J. Michael Straczynski. ~ Hal Erickson, Rovi