Upon discovering an ancient Bajoran city, the Prophets send a dire warning to Sisko.
5-01: Apocalypse Rising
When Gowron is believed to be a Changeling, Sisko, Odo, Miles, and Worf go undercover to expose the truth.
5-25: In The Cards
To cheer up a somber Sisko, Jake and Nog work hard to get a vintage baseball card for his birthday.