Drabsbetjenten John Cardinal må samarbejde med sin nye kollega Lise Delorme, da det viser sig, at hans teorier om den forsvundne 13-årige Katie Pine holder vand. Han får hurtigt mistanke om, at en seriemorder er løs.

Det lokale politi forsøger at berolige offentligheden, da efterforskningen af Katie Pines forsvinden trækker ud. Delorme har udfordringer på hjemmefronten, og hendes hemmelige dagsorden giver problemer. Samtidig er morderen i færd med at spore sig ind på sit næste offer.

Delorme får på fornemmelsen, at Cardinal ikke har tillid til hende, da hun bliver tildelt flere ubetydelige opgaver. Nye spor fra en beslaglagt computer giver hende fornyet håb, men da endnu en person bliver meldt savnet, frygter politiet det værste.

Cardinal løber en stor risiko på et pressemøde, hvilket fører til et sammenstød med politichefen. Samtidig er Delormes kæreste på krigsstien, da han mistænker, at Cardinal er en medvirkende årsag til hans problemer i parforholdet.

Cardinal og Delorme har identificeret morderen, så nu handler det bare om at finde de mistænkte, inden flere mennesker mister livet. Sporene fra en ransagning fører dem til en forladt skole, hvor de bliver mødt med skud.

Cardinal er i stand til at redde et udset offer, da han erfarer, at den formodede morder ikke er alene om sine ugerninger. Faren er dog langt fra drevet over, og nu risikerer endda hans nærmeste at miste livet.

Detective Jerry Commanda finds a confused, red-haired woman alone at a roadside bar with a bullet in her head. Red has no memory of who she is, how she got there, or who shot her. Even after the bullet is removed, she can’t remember anything. Commanda turns the case over to Detectives John Cardinal and Lise Delorme, who must protect Red while trying to uncover her identity and shooter.

Detectives John Cardinal and Lise Delorme identify the latest body as a local gun thief, their only suspect. Tracking the victim’s final days leads them to the local Northern Raiders biker gang, so they enlist the help of an expert, Staff Sergeant Alan Clegg from the Ontario Police Department (OPD).

Detective Cardinal and Delorme retrieve security footage of Red that helps identify her as Terri Tait, a student from Vancouver, BC.

Having tracked down Terri, Cardinal gains her trust. Terri’s recovered memories give the team new information to work with and they make progress tracking Terri’s shooter.

John and Lisa connect evidence from a new crime to a ritualistic murder and Terri's memories help make a connection to a possible suspect.

John and Lisa race to find Ray before he kills Terri and her brother. A betrayal threatens Cardinal and Delorme's case and their lives.

As Cardinal struggles in the wake of his wife’s suicide, Delorme becomes lead detective on both a double-murder and a string of muggings.

Cardinal and Delorme struggle to identify the victims, unaware that there is a witness to the crime, who is being stalked by the murderer.

As Sharlene and her family hold Lloyd Kreeger captive, Cardinal and Delorme flush out an unexpected ally in their search for the killers.

Armed with new evidence, Cardinal and Delorme make a break in the case that could explain the motive behind the murders.

Cardinal and Delorme uncover the identity of the Island Road killer and link the double homicide to the ATM robberies.

Cardinal finds evidence that may prove Catherine was murdered, but he’s sidetracked by a development in the Island Road case.

After a prominent Algonquin Bay politician reports her husband missing, Cardinal and Delorme suspect abduction.

A shocking death and second abduction cause Cardinal and Delorme to believe their suspect is a professional killer for hire.

As Cardinal and Delorme work to find a connection between the victims, they realize that not everyone’s telling the truth.

Another abduction hits close to home as Cardinal and Delorme are caught in a race against time to save the next victim before it’s too late.

Cardinal and Delorme close in on a secret from the past as they close in on the killer’s motives—and his identity.

Detectives John Cardinal and Lise Delorme make an unexpected arrest and follow a hunch to their killer's location, but he's one step ahead and stopping him will be incredibly risky.