Trevor White appears as FBI technical analyst Doug Scaife in this episode. He previously appeared in "Midnight of the Century" but this episode marked his first reappearance on the show. From here he becomes a supporting character who would appear throughout the latter half of the third season.
This episode marks Stephen James Lang's final appearance as Detective Bob Giebelhouse.
This is the last time we see Frank's old yellow house.
This episode is the final appearance of Megan Gallagher as Catherine Black.
This episode contains many flashbacks to the last two episodes of season 2 - "The Fourth Horseman" and "The Time Is Now." Some of these are visual references and others auditory - snatches of dialogue from the two shows. It also finally connects up what happened in the immediate aftermath of the final scene from season 2's finale.
The episode's title acts, undoubtedly, as a nod to Millennium musician Mark Snow.
Features the song "The Dark End of the Street" by James Carr.