This episode was directed by Roxann Dawson, who played B'Elanna Torres in Star Trek: Voyager (1995).
Filming for this episode ran simultaneously with the previous one, Carpenter Street (2003), for two days.
This episode marks the final appearance of the Pyrithian bat.
D'Jamat talks to Archer about the time where he had to torture a prisoner in the airlock. He refers to Orgoth, whom Archer interrogated in Anomaly (2003).