4-03: The Visitor
When a freak accident traps Sisko in a time paradox, only re-appearing every few years, Jake spends the remainder of his life trying to save him.
4-19: Shattered Mirror
The mirror Jennifer Sisko lures Jake and Benjamin to the alternate universe to assist with building another U.S.S. Defiant.
Jadzia fights temptation when she is reunited with the new host of Torias Dax’s widowed wife.