Star Trek: Deep Space Nine: Defiant

"Defiant" is the ninth episode of season three of the television series Star Trek: Deep Space Nine. It is the 54th episode of the series overall and originally aired on November 21st, 1994. The episode was directed by Cliff Bole and written by Ronald D. Moore. In this episode, Thomas Riker, a duplicate of William T. Riker via a transporter accident, sneaks aboard Deep Space Nine and steals the newly commissioned Defiant. With Major Kira as his unwilling passenger, Thomas takes the Defiant to the Orias system, deep in Cardassian space, where the Maquis believe that the Cardassians are building a fleet of warships.

Notes & Trivia

 * Special guest star Jonathan Frakes as Thomas Riker. Frakes usually plays the role of Commander William T. Riker on Star Trek: The Next Generation. Thomas Riker appeared last in the TNG episode "Second Chances".