In this episode, suspecting that a Changeling is impersonating the Klingon chancellor Gowron, the Deep Space Nine crew undertake a mission to expose the impostor.
[3] Having learned from security chief Odo that a Changeling has taken Gowron's form and is now in control of the Klingon Empire, Captain Benjamin Sisko is ordered by Starfleet Command to expose the impostor.
When Sisko is called to receive his award, he attempts to activate the emitters, but is knocked to the floor by Martok, who has finally recognized them and has them thrown in a security cell.
Just when Worf is about to kill Gowron, Odo reveals the false Martok to the crowd, and the Klingons open fire, quickly destroying the Changeling.
The primary photography for the episode was conducted on Stage 18 at the Paramount Pictures lot which was used to represent the Klingon Hall of Warriors.
Because of the size of the Hall of Warriors, cinematographer Jonathan West used bleached muslin to hide fluorescent lamps in the window treatments.
Club praised this episode for its "pulpy charms" and enjoyed seeing the main characters disguised as Klingons: "it really is fun, with some solid twists and soul-searching sprinkled throughout.