Star Trek: Deep Space Nine S03 E21 The Die Is Cast (2)

"At the edge of the Final Frontier, the Universe's greatest mystery is about to unfold."

Stardate: Unknown. Now rejoined with his former mentor, Garak is ordered to interrogate Odo about the secrets of his people, while the joined Romulan/Cardassian attack fleet moves towards the Founders' home world on a mission of destruction.