Infection

"Infection" is the fourth episode of the first season of the science fiction television series, Babylon 5. "Infection" was the first script written for a regular Babylon 5 episode. Plot Dr Vance Hendricks, a former college lecturer of Dr Franklin, visits him while he is checking on the cause of recent death of a Babylon 5 customs worker. Hendricks tells Franklin that while excavating the long-dead planet Ikarra VII for the corporation Interplanetary Expeditions, they had come across some artifacts that they determined were organic in nature, and something that humanity has been trying to develop themselves. Hendricks has Nelson, his assistant, bring the artifacts in, but Franklin expresses concern that they have not been properly put through quarantine; Hendricks assures him that they were processed prior to arriving on the station. As Nelson prepares the artifacts for examination, he is hit him with an energy surge emanating from one of the artifacts. Over the next several hours, his body starts transforming, and unseen by the others, takes one of the devices and attaches it to himself. The station staff, still investigating the sudden death of the customs worker, start to detect energy spikes on the station. Franklin and Hendricks realize that the Ikarra artifacts have infected Nelson and are transforming him into a weapon. Franklin studies the remaining artifacts to learn that the Ikarran people had developed these bio-weapons to fend off invaders to their planets, telling them protect the planet from anyone that was not a "pure" Ikarran. While the weapons held off the invaders, this instruction caused the weapons to turn on the Ikarrans since there was no such thing as a "pure" Ikarran. Nelson has now been transformed into one of these weapons, and will rampage through Babylon 5, gaining power over time. Franklin explains the situation to Commander Sinclair while the station is being put into lockdown. Sinclair decides to face the weapon alone, explaining how they had wiped out their creators because they could not determine what a pure Ikarran was. The weapon pulls off the device from its armor and crushes it before collapsing, returning Nelson back to normal. Back in medbay, Franklin assures Nelson is fine, but confronts Hendricks knowing that he had instructed Nelson to smuggle the Ikarra artifacts aboard; it was Nelson's intent to kill the customs worker which allowed the Ikarran artifacts to take over his body.