This episode directly relates to Season 3’s “House of Quark”.
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.
5-11: Darkness and the Light
Kira's life is in danger as other former members of the Shakaar Resistance Cell are being murdered by an unknown asssailant.
5-08: Things Past
Sisko, Jadzia, Odo, and Garak suddenly find themselves living as Bajorans who were wrongfully executed aboard Terok Nor during the Occupation.