This episode directly relates to Season 3’s “House of Quark”.
5-13: For The Uniform
Sisko relentlessly pursues the elusive traitor Michael Eddington, former DS9 crewman turned Maquis.
5-19: Ties of Blood and Water
To the dismay of Weyoun and Dukat, Kira tends to a fatally ill Tekeny Ghemor aboard DS9, resurrecting unpleasant memories of her father’s passing.
5-22: Children of Time
The Defiant crew encounter their own multi-generational descendants on an alien planet.