In this tragic final episode, Nick and Natalie lose a mutual close friend. In working through their grief, Natalie recognizes the magnitude of her for Nick, and Nick realizes that he must finally choose between eternal life or eternal love.
Mysterious, gory deaths are haunting the town, and the vampires are the targets! Nick and Tracy's search to uncover the mysterious crime spree leads them to Lacroix and ultimately, his vampire daughter. Seeking revenge against her father, she threatens to destroy all those associated with him.
Nick and Tracy find themselves on the path of a brutal murderer who is the reincarnation of a seductress vampire Nick knew long ago. With the help of a psychotherapist, who has been counseling the killer, the detectives try to circumvent another crime from occurring. However, Nick and the killer square off for one last act of vengeance, but this time only one of them will survive.
Nick and Reese investigate a trail of murders only to discover that the lead suspect is a Hitler-type racist from Reese's past. When the killer devises a plan to get Reese removed from the case, the Captain's rage intensifies. Concerned that Reese may be on a personal vendetta, Nick soon learns that the Captain is one step ahead of the killer (and him) in cleverly obtaining incriminating evidence.
The murder of a popular wrestler leads Nick and Tracy to a rival competitor whose secret steroid use has been discovered. After arresting him, they discover that he has a mentally handicapped teenage nephew, who Nick and Natalie volunteer for joint custody until the case is resolved. When the real killer later confesses the crime, Nick and Natalie focus their attention on helping the boy and his uncle rebuild their lives.
When a battered woman is brutally murdered inside her daughter's room at a shelter, Nick searches for her husband as the prime suspect. Despite an eyewitness account from the daughter, Nick and Tracy cannot find enough evidence to convict him.
Nick and Janette are reunited when a police sketch artist produces Janette's image as the main suspect in the murder of an arson investigator. When Janette confesses to the murder, Nick struggles to find the truth behind Janette's bizarre behavior, ultimately discovering the startling secret behind her mysterious disappearance from Toronto.
Investigating the murder of a virtual reality software designer, Nick Knight turns to a VR game filled with vampires. Knowing it's only a game, Nick indulges in intoxicating vampire feedings, unaware he is rekindling his lust for blood and killing in the real world. The closer he gets to solving the crime, the stronger his urges grow.
While investigating a seemingly accidental death in a house rumored to be haunted, Nick, Tracy and Natalie each encounter the ghost of a loved one. The sight of the apparitions clouds their search for the truth as the three struggle to come to terms with tragic events from their past.
A rat infected with a newly engineered virus escapes from the lab when the scientist is murdered, and soon becomes Screed's next meal. Designed to combat HIV, the new virus is a first only mildly harmful to vampires but intensifies with each successive "feeding," quickly becoming lethal. As the virus spreads rapidly through the vampire community, ultimately infecting both Vachon and Lacroix, Nick races against time to find the killer- and hopefully a cure.
Intense therapy for a debilitating drug addiction has popular singer Christie Black staying at the home of controversial psychotherapist Dr. Ben McGee. When Christie's mother is murdered, her brother Matthew becomes Nick's prime suspect, though he doesn't have enough evidence to hold him. As Matthew is leaving the police station, Nick focuses his investigation on McGee who he believes has programmed Christie to be a robot killer.
When an investigation puts Nick in the midst of an exorcism ritual, he is overtaken by an evil so powerful, even Lacroix is powerless against the demon. Only a new exorcism, replete with the very religious paraphernalia every vampire abhors, can rid Nick of this evil.
A lethal bullet wound to the head brings Nick to the emergency room where doctors, unable to find a pulse, pronounce him dead. Lacroix uses his vampire powers to revive him and force the attending physicians to forget his "death." Dr. Natalie Lambert then explains away Nick's condition as not being as serious as first thought. Although his physical wound is healing, his mind has been struck with acute amnesia. Now he must struggle to find the identity of both the killer and himself.
Forced to take time off after shooting a perpetrator, Tracy ignores her orders and goes undercover at an escort service to investigate the murder of an employee. After Vachon blows her cover, she is left alone on the street and gets abducted by the killer. Meanwhile, Nick enlists the help of an infamous psychotic killer for clues to the personality of this murderer.
When a stripper wakes to discover the man she picked up at The Raven has been stabbed to death, even a polygraph test cannot spark her memory of how she got into his apartment. A lack of blood at the murder scene leads to the discovery of a vampire bite on the victim. Nick and Tracy must now search for the killer without revealing to each other their knowledge of vampires. The investigation takes a bizarre twist when their suspect exhibits multiple personalities, only one of which is a vampire, with the other two personalities operating as true mortals.
Ratings at any cost is the agenda for the producer of a popular TV talk show. When the cost becomes murder, Tracy unwittingly goes undercover, unaware that she has been chosen as the next victim -- for a televised murder -- designed to satisfy a jealous rage and boost the program's ratings.
Nick Knight is a 13th-century vampire living in modern day Toronto. In an effort to regain his mortality, Knight atones for 700 years of evil by fighting crime as a homicide detective for the Toronto police.
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