The Group investigates the suicides of identical twin girls born seven years apart in different families. Dennis Hoffman, a noisy man obsessed with the apocalyptic planetary alignment prophesied to occur in 2000, helps Frank on the case.
Frank links two seemingly unrelated murders to the modus operandi of a psychopathic serial killer caught twenty years before while trying to kill Frank, and who's still in prison serving his life sentence.
When his sister-in-law is kidnapped at her child's baptism, Frank must calm his brother and find the kidnapper before it is too late. For the first time, Frank's daughter shows signs that she has inherited some of Frank's strange gift.
After waking up in an alley with blood oh his hands and no memory of the last few days, Frank has the bad feeling that someone has been murdered. Watts helps him retrace his steps back to a clinic specialized for clinical trials.
While assisting the FBI in the hunt for an escaped serial killer, a mad doctor he put in prison, Frank unknowingly meets his demonic, inhuman nemesis and the mastermind of unspeakable evil who claims the life of someone close to him.
Told in flashback, the story follows Frank and the Millennium Group who become pawns in the otherworldly battle between the devilish lawyer of a schizoid satanic serial killer and a mysterious young man.
Frank is asked to clear the name of a man who may have been mistakenly convicted of murdering his wife. His investigation leads to a serial killer who's just claimed his latest victim. Meanwhile, Frank's stalker comes for Catherine.
In his frantic search for Catherine, Frank tries to beat her abductor at his own twisted mind game before it's too late. Meanwhile, a comet that the abductor believes to be the harbinger of the apocalypse is making its way through space.
The Group asks Frank to investigate the brutal death of an old couple killed by a pack of vicious dogs in an odd small town in Montana. A hermit who represents the Group there explains to Frank how the pact between Heaven and Hell works.
Frank, who has a new stalker, helps the Group locate a raving lunatic on the run who might be infected with a pathogen. He reveals a conspiracy involving the Human Genome Project, experiments on the homeless and the genocide in Rwanda.
With the assistance of Lara Means, a colleague from the Millennium Group that shares his gift, Frank investigates the owner of a daycare center accused of committing child abuse - only to end up being accused of the same thing.
A Native American doomsday cult targets Frank after he joins forces with a female archaeologist to investigate the ritualistic murder of a Native American man whose body was found at an archaeological site in New York City.
On Halloween night, when demons come calling, Frank is haunted by the ghosts of memories past including that of a soldier he met as a child. He offers Frank a way to pull out of his downward spiral - by making a deal with the Devil.
Obsessed Watts asks Frank to travel with him to Germany where a legendary holy relic tied to the very origin of the thousand-year-old Millennium Group may have been found. But, mysterious traitors within the Group stand in their way.
In this funny satire with a grim twist, quirky novelist Jose Chung, first seen in an X-Files episode, authors a short story critical of a millennial self-help movement similar to Scientology and becomes the target of one of its followers.
As Christmas approaches, Frank is contacted by his estranged father, which brings back a childhood memory. However, Jordan is contacted by the spirit of her dead grandmother who also had Frank's gift, so Frank turns to Lara for advice.