KISS's appearance was largely down to the fact that they wanted to promote their album, "Psycho Circus".
This was a tough assignment for writer Michael R. Perry who was informed by the network that the episode had to feature KISS, had to give them all speaking parts (even though several of them had never acted before) and had to feature them performing a song.
When Agent Hollis takes a bath she is seen reading "Labyrinths", a collection of short stories by the magical realist and fantasy author Jorge Luis Borges.
The 50th episode of "Millennium".
Jeff Yagher who plays Mark Bianco is Megan Gallagher's husband in real life.