Admiral Ross at Starbase 375 uncovers a major reason for the Dominion's dominance — a sensor array monitoring all activity across five sectors. Sisko soon formulates a risky plan to disable it. Back on Terok Nor — the Cardassian name for Deep Space 9 — Kira and her "resistance cell" of Jake, Rom and Odo work to foster ill will between the Cardassians and the Dominion. When Odo speaks out against her latest scheme, Kira begins to question his loyalty.

Jeffrey Combs (Weyoun)
Marc Alaimo (Gul Dukat)
Max Grodénchik (Rom)
Aron Eisenberg (Cadet Nog)
Casey Biggs (Gul Damar)
Barry Jenner (Admiral Ross)
Salome Jens (Female Shapeshifter)

• Salome Jens as the Female Changeling hasn't been seen since the fourth season finale "Broken Link".
  
• The Female Shapeshifter "seduces" Odo. Odo betrays the "resistance" and Rom is captured.
  
• Damar (Dukat's 2nd in command) is promoted from Glinn to Gul.
  
• Sisko is promoted to the position of Adjutant for Admiral Ross (Federation Task Force Tactical Operations).