This episode came about because the writers felt that since the six-episode arc and "Waltz" they had allowed the character of Dukat to slip too much into the background.
This episode represents the final stage in the complex relationship between Kira and Dukat.
Promazine is a real drug, but it is used as an anti-psychotic.
The first shot of Dukat was purposefully designed to give the effect of a halo above Dukat's head.
This marks the birth of at least the second offspring of Dukat and a Bajoran woman, after his daughter Tora Ziyal.