Stardate: Unknown Grand Nagus Zek is kidnapped by members of the resistance cells from the mirror universe. The mirror universe's Ezri arrives on Deep Space Nine and offers an exchange: a cloaking device for Zek. Quark and Rom accompany the Mirror Ezri back to her universe where they are captured and held prisoner.
Elenco: Avery Brooks , Nana Visitor , Colm Meaney , Terry Farrell , Michael Dorn , Cirroc Lofton , Alexander Siddig , Armin Shimerman , Rene Auberjonois , Nicole de Boer , Aron Eisenberg , Andrew Robinson , Jeffrey Combs , Marc Alaimo , Chase Masterson , Casey Biggs , Rosalind Chao , Mark Allen Shepherd , Terry Farrell .