of the settings that are keeping Kosh alive; when Dr. Kyle realizes what she's doing, he tries to stop her, and she attacks him. At that moment, the real Lyta Alexander enters the room; her double escapes. Upon further investigation in Varner's quarters, Garibaldi learns that Varner had been smuggling illegal items between systems, and that he most recently had gone to the Antares sector to acquire a changeling net: a device that can make an individual appear to look like somebody else. The crew realizes that Kosh had not been poisoned by Sinclair when he arrived at the station, but by someone using the changeling net to imitate Sinclair. Since the use of such a device would put out a lot of energy, Takashima uses the station's scanners to pinpoint an area of the station with a high concentration of unidentified energy use. Sinclair and Garibaldi head for that part of the station, just as a Vorlon squadron arrives in the vicinity of the station to pick up Sinclair for his voyage to the Vorlon homeworld. Sinclair and Garibaldi confront the mysterious assailant. Garibaldi is injured in the firefight and Sinclair faces the assassin himself. The changeling net is disabled, revealing the assailant to be a Minbari assassin. The assassin is a member of the Minbari warrior caste and wanted to discredit Sinclair as retribution for Sinclair's role in the Earth–Minbari War ten years earlier. Sinclair asks the assassin why he did it; the assassin replies simply, "There is a hole in your mind." Sinclair, being informed that the assassin has triggered an explosive charge, manages to get away just before an explosion rips a hole in the station's hull, throwing the station off its axis and beginning to tear it apart from the inside. Takashima uses the station's stabilizers to reestablish its axis. The Vorlon delegation, now satisfied that Sinclair is innocent, drops all charges against him. In the station's garden, Sinclair reveals to Delenn what the Minbari assassin had said about the "hole" in Sinclair's mind. Delenn claims that it is just an old Minbari insult. Sinclair, however, tells her that he had fought in the climactic battle of the Earth–Minbari War, and that there is a twenty-four-hour period in the climactic battle, just before the Minbari surrendered, which he can't account for. Takashima declares Babylon 5 open and operational. Cast Michael O'Hare - Cmdr. Jeffrey Sinclair