Teaming up with Fox Mulder, Black learns that the Group is still operating over a decade after their supposed defeat, and have recruited his estranged daughter to combat gathering demonic forces.

Set during the events of the season ten comic book series for The X-Files, the events of Millennium see Federal Bureau of Investigation agent Fox Mulder joining the long-standing crusade of offender profiler Frank Black as he combats the Millennium Group, a doomsday cult entrenched in elements of the United States law enforcement.

Propps' method of killing involved brainwashing his kidnapped victims until they were willing to commit suicide by drowning; however he is now seen as a model reformee and is released.

The two visit the released man's halfway house, arriving shortly after his parole officer; inside they find Propps drowned in his bath.

The comic series was written by Joe Harris with art by Colin Lorrimer, and saw Chris Carter, the creator of Millennium, serve as executive producer.

[3] Harris cites the success of the adaptation of The X-Files for providing the impetus for a Millennium comic, noting that IDW editor-in-chief Chris Ryall approached him to write the latter series having seen the reception the former had been receiving.

[8] Reviewing the first issue for We The Nerdy, Taneisha Jane gave a score of 90 out of 100, describing it as having "excellent storytelling that will keep you engaged",[9] and complimenting Lorimer's artwork.

[9] Comic Vine's Tony Guerrero praised Lorimer's "creepy" artwork,[10] but felt that the storytelling required too much foreknowledge of the television series to fully understand.

[10] Reviewing the third issue for SciFiPulse, Patrick Hayes praised the series' use of photographic alternate covers for subscribers, and complimented the artwork and colouring throughout.