Picking up where the previous week's "Homefront" left off, this episode finds Sisko and Odo still in San Francisco, still preparing Earth for war against the dominion. The instigators of the hostilities appear to be a band of Changeling infiltrators. But upon further investigation, Sisko comes to the sobering conclusion that the real enemy may be a subversive faction within Starfleet itself. The pivotal character in this drama is Admiral Leyton (Robert Foxworth). First telecast January 8, 1996, "Paradise Lost" was written by Ira Steven Behr and Robert Hewitt Wolfe from a story by Ronald D. Moore.