Following a vague tip from Deep Throat, Mulder uncovers secret testing of alien DNA on humans by the government but is captured and infected with an alien retrovirus. Against his own concerns, Deep Throat tries to do too much for the agents and is discovered as Mulder's source and is executed. At the very end, Mulder informs Scully that word has come from the top of the executive branch to close The X-Files |
