This episode takes place three years after the previous one, in which the killer of Judge Natalie Rodman escaped justice.
The victim: Trent McAllister, the killer: Lexi Moore.
Trent is the owner of a company that specializes in high end repossessions while Lexi is a friend to Thomas Anderson, Trent's estranged grandson. Trent's body is found next to a helicopter having by being caught in the rear rotor. The team reunites to pursue both the previously unsolved and current homicides.
The victim: Judge Natalie Rodman, the killer: Lexi Moore.
Judge Rodman is a long-time respected jurist who is also one of Angie's mentors who helped her make the career choice to be a detective. Lexi is one of Judge Rodman's law clerks. The case begins as an arson investigation after a barbecue explodes at Mr. & Mrs. Rodman's home. The barbecue was rigged to explode when turned on. Natalie survives the explosion but dies of internal injuries suffered during the explosion. As Angie digs into Natalie's past she discovers some unsavory details of her mentor's life.
Meanwhile, Angie acts as Staff Sergeant in the wake of Oscar's retirement and Sergeant Saunders of Internal Affairs approaches Brian about a possible career opportunity.
The victim: Liz Kerr, the killer: Seth Armstrong.
Liz is a 23-year-old woman working as a barista at a local coffee house. Seth is the father of Rachel Armstrong, who is Liz's good friend and co-worker. Liz is found dead in her apartment from a head wound courtesy a mace, which was used by her boyfriend, Ron, in a medieval live action role play game that both participated in.
The victim: Chloe Wilson, the killer: Jessica Wilson.
Jessica is Chloe's older sister. Chloe's unidentified body is found in a house under construction with the cause of death being multiple nail gun shots. After she is identified by her boyfriend, the team looks into the relationship between the sisters and their dying mother. It turns out that, until recently, Chloe had been missing since the age of three.
The victim: Dave Briggs, Jr., the killer: James Lennathan.
Dave is a video game designer working on his latest project, while James and his partner, Heather, are antique dealers. The case begins with a large pool of blood - but no body - in the game development studio. The team's only clue is a video showing Dave being decapitated while wearing a motion capture suit.
The killer: Whitney Fraser, the victim: Julian Bishop
Julian is a fourth year university student and member of a fraternity. He is also a British citizen and the son if of a well-known British politician. Whitney has recently opened her first clothing store and has a younger sister attending the same university. Because of Julian's mother's notoriety, the British government sends and Interpol agent to help Anige with the case.
The victim: Nancy Bailin, the killer: Rand Hardy.
Nancy is an intelligent high school student and a writer/photographer for the school newspaper. Randy is a teacher at the school and also serves as the faculty advisor for the newspaper. Nancy's brother, Josh, confessed to the killing and is in prison.
As Angie is leaving for vacation, a woman, Susan Bailin, with a bomb strapped to her person stops her and forces her to go back to the police station where she takes numerous hostages. Her demand is for the release of her son, Josh Martin, who she claims is innocent. Angie connives Susan to let her detectives go and with Oscar and Betty, they reopen the case.
The killer: Cindy Vernon, the victim: Tracy Blaine.
Cindy is a music teacher at a prestigious conservatory and the girlfriend of the conservatory's head, Dean Teller., Tracy is the wife of Steven Blaine, who runs his own his own natural juice company, which is dealing with a class action lawsuit due to the death of three people who drank tainted juice. Tracy's body is found impaled through a tree branch. The case takes on added urgency when the team discovers that Tracy was with her stepson, who is now missing.
The victim: Dawn Richards, the killer: Dr. Henry Price.
Dawn is a member of the Frenemies, a women's professional roller derby team. The case starts with Dr. Price coming to the police station to express his concerns about a patient of his named Peter Carver. He says Peter is displaying homicidal tendencies and he ends up describing the details of Dawn's death, which match the another murder from three years earlier. The discovery means that the wrong person might be in prison for the three year old murder.
The killer: Hank Novak, the victim: Vince Hutton.
Hank is the owner/manager of the Chieftain, a bar in Squamish. Vince is an ex-con who served twenty years for drug smuggling. He is also Hank's old friend from high school, and had also worked as the Chieftain's doorman.
The victim: Chris Mancuso, the killer: Logan Tenwick.
Chris is an environmental consultant while Logan is a research scientist for Turner, a biomedical firm for which Chris has done an environmental assessment. Chris is found dead inside a sensory deprivation tank at a day spa. This was part of Chris' routine upon returning from business trips. The case turns when Betty discovers that not only was Chris poisoned, but that he is also carrying an active and unknown pathogen. Since the killer was likely infected when he came in contact with Chris and has infected others since, finding him takes on a new urgency.
The victim: Avery Bowman, the killer: Courtney Meisenger.
Avery is the wife of star quarterback Russell Bowman. She also heads up his charitable organization. Courtney is the owner/operator of a bakery/catering business. One of her recent clients is Russell's charity. Avery is found dead at the site of a single car crash, but when Betty determines that she did not die from the crash, but from anaphylactic shock, the team investigates. Meanwhile, Angie fills in as Staff Sergeant while Oscar is in court.
The killer: Murray Schultz, the victim: Greg Schultz.
Greg is Police Constable and Murray is Greg's older brother and a stand-up comedian. With Oscar Vega having been promoted to Staff Sergeant, Angie and new partner, Det. Brian Lucas, along with newly arrived Det. Mitch Kennecki, investigate Greg's death, which at first appears to be a suicide.
The killer: Neville Montgomery, the victim: Maria Snow
Maria is Neville's Director of Communications. Her body is found atop a parked car, having fallen from the seventh floor of a heritage building recently purchased by Neville. Although the detectives suspect Neville is behind Maria's death, all evidence leads to Neville's son, Robert, who is subsequently arrested. The investigation also shines a light on the relationship between Sgt. Cross and Deputy Chief Halford. After the case is closed, the team comeds together to support Det. Vega, who is headed into a very risky surgery.
The killer: Lawrence Frampton, the victim: Rick Wyatt
Lawrence is a collections agent who is grieving the death of his wife, Helen. Rick is an insurance adjuster whose dead body is found in the driver's seat of his car, which is parked at his his workplace. As the investigation unfolds, the detectives are unable to find Rick's widow, Lisa, making her a suspect. It also turns out that the Wyatts and Framptons are neighbors in a housing development and have a history. Meanwhile, Det. Vega learns more about his illness.
The killer: Charlie Monahan, the victim: Ken Leung
Charlie is a social worker and Ken is one of the leaders of the Golden Tiger Triad gang, the largest in the city. When Ken's bullet ridden body is found in his home, two other murder victims' bodies are also discovered. Detectives Flynn, Vega and Lucas each take point on one of the investigations. Eventually, Betty ties the three killings together with forensic evidence.
The killer: Ashley Kirkwell, the victim: Dr. Garrison Osgood
Ashley is the former owner and operator of a strip club called the Blu Lounge, which was formerly called Purgatory. Garrison is a successful plastic surgeon who, in partnership with Dr. Lucy Everhill, owns a private clinic. The detectives are called to the clinic when the body of Dr. Everhill is found. While there, they encounter Dr. Osgood, who is still alive, albeit barely, covered in blood and holding a knife. He dies in front of the detectives uttering 'Purgatory' as his final word. This instantly makes him the chief suspect in Dr. Everhill's murder. Also, Angie talks to Sgt. Cross about her suspicion that she is being followed.
The killer: Stacy Lawford, the victim: Nika Reid
Stacy works for an online gossip blog called Wicked City while Nika is an assistant to well-known but sleazy photographer Eric Sharpe. Stacy and Nika are also best friends and roommates. Upon awakening after a night of partying, Eric finds Nika's dead body in his bed. He can't remember what happened the night before and when the murder weapon is tested for fingerprints, only his are on it. Combined with Eric's lack of cooperation with police, he becomes their prime suspect. Meanwhile, Sergeant Gavin Saunders of Internal Affairs continues his investigation into the Neville Montgomery case.
The killer: Joe Hillis, the victim: Ginelle Mercier
Ginelle is a free-spirited tarot-card reader whose clients include Joe's sister Elizabeth. Joe is a brew-master who on the verge of opening his own brewery, which is a joint project of his and Elizabeth's. Ginelle's body is found hidden behind wood paneling in a vacant warehouse. Because of the condition of her body, she died anywhere from 10 months to a years ago, leaving detectives with a lengthy timeframe to investigate. Meanwhile, Oscar finally tells Angie about his health issues.
The killer: Brad Calgrove, the victim: Chelsea Richmond
Chelsea is a pastry chef and Brad is a pilot. Chelsea is found frozen to death in the freezer of her rental home. Because of the freezing, Betty cannot give a time of death leaving the detectives to narrow a six-month window in which Chelsea died.
The killer: Wesley Hillridge, the victim: Perry Doyle
Perry and Wesley, who is only 14, are both street artists. Wesley looks up to Perry and is sure he is Contagion, the highly regarded and anonymous artist who he wants to apprentice under. Perry's bruised and broken body is found dangling from an overpass and the dectectives surmise that he was hit by a passing truck while working on the side of the overpass. Meanwhile, a brave faced Betty continues to deal with the aftermath of her bring attacked in the morgue.
The killer: Ella Rollins, the victim: Lee Ward
Ella is a florist married to security guard Blair Morton. Blair helps out Lee, who ran out of gas. For their kindness, Lee invites Blair and Ella to a party at his home. Later, Lee, along with a security guard, is found dead at an armored truck robbery where Blair is the other guard. Blair tells the police that Lee was about to kill him when he literally dropped dead in front of him. Meanwhile, Angie continues her investigation into Neville Montgomery and Betty is attacked in her morgue.
The killer: Wayne Hobbs; the victim: Peter Glass
Peter works for a digital security company and lives with his stay-at-home wife and their sixteen year old daughter, Sophie. Wayne is a general contractor who built a patio for the Glasses. Meanwhile, Angie continues her investigation into the Derek Caster murder while Sgt. Cross is keen to spend more time in the field.
The killer: Robin Gould; the victim: Geoff Armstrong
Robin is an architect who works for a firm run by her fiancee Isaac Griffin and Geoff is an urban planner who works for the city and teaches scuba diving in his off time. Detectives Flynn and Vega are first called in to investigate the disappearance and presumed murder of Robin, who, two days earlier, had called off her engagement. Robin's car is found in a remote area containing her blood. During their investigation, the team talks to Isaac concerning his missing ex-fiancee and discover a connection to Geoff, who is responsible for granting a variance from the city to allow construction on one of Isaac and Robin's prize developments to proceed. Meanwhile, Vega struggles with his upcoming weapons re-certification test.
The killer: Stephanie Carson, the victim: Erica Grey
Stephanie is a financial adviser with a daughter named Madison. Erica, is a housewife and high end escort who uses her life coaching business as a front. She is found on the floor of the bathroom with a puncture wound in her neck and the word 'slut' written across her forehead, leading the detectives to question the men on her client list.
The killer: Derek Caster, the victim: London Montgomery
London is the daughter of wealthy industrialist Neville Montgomery. She is now six months removed from drug rehabilitation and has kept herself clean. She wants her upcoming birthday party to double as a drug facility fundraiser. After the party, she is found dead in an alley from drug poisoning. Derek is a 'fixer,' a man paid to make problems disappear. Additionally, Vega has to recuse himself from the case when he discovers that the victim's last contact was with his father, Franco.
The killer: Doug Slater, the victim: Samantha Turner
Samantha is a prosecutor who is also Sergeant Mark Cross' girlfriend. She is the lead prosecutor in the upcoming trial against the League of Nations gang which Mark infiltrated in a two-year undercover assignment. Doug Slater was also involved in taking down the gang and, in addition, was the first responder in a shooting ten years ago. The officers on the scene were Angie Flynn and Mark Cross and the truth of what really happened there has haunted Angie and Mark to the present day.
The killer: Dustin Hess, the victim: Lori Oliver
Lori is a successful, best-selling crime novelist, while Dustin is a creative writing professor at Langara College. He thinks very little of Lori's work and puts it down most any chance he gets. When Lori collapses and dies at a book signing and Betty soon determines that she was poisoned. The poison is slow acting and symptoms can take up a 20 days to show, leaving the detectives with a lengthy timeline to investigate.