S1.E1 ∙ Mystery Weapon

On Remembrance Day, in a wealthy suburb, a German matron is found beaten and brutally murdered. An autopsy reveals that the real cause of death is that she's been shot in such a way as to conceal this fact. Firearms expert Sam Barbetta inspects the bullets and determines that the murder weapon was homemade - the bullets can't be traced!

S1.E2 ∙ Three Little Words

An ex-model is found dead by her recent ex-boyfriend, Jeff. The victim is laid out on the bed fully clothed, her hands folded across her chest in an "at rest" position. Jeff allegedly gets another shock when he finds the message "Jeff You're Next' scrawled in lipstick across the living room mirror. Investigators discover that Jeff had intended to move out that day.

S1.E3 ∙ Trace of Paranoia

Shortly after a young working student moves into a new apartment, she suspects someone has been visiting when she's not there. To quell her suspicions, she places a bottle just inside the door as she leaves for work. When she returns, the chain is still on the door, but the bottle has been moved. She gets the shock of a lifetime when a stranger is found dead in her bathtub.

S1.E4 ∙ Splinter of Guilt

Two men are shot and killed in a botched robbery at a local community centre after catching two thieves in the act. The murders occur in the boiler room. One of the bullets has pierced a drum of purple air conditioning fluid and so the floor is a wet, sticky mess of blood and purple fluid.

S1.E5 ∙ Bad Blood

Dr. Cheryl Wagner treats her first ever female patient with AIDS. Only days later she treats a second woman with the same affliction...then, a third. Incredibly, all are infected by the same man. At Dr. Wagner's insistence, public health officials issue a restraining order, forbidding the man from having sex. He then infects another woman.

S1.E6 ∙ The Case of the Shoe

It happened on a native reserve in Southern Ontario. That's where two masked men broke into a house in the middle of the night. Living there were a husband and wife who owned a profitable gas station/restaurant. When their demands for money aren't complied to quickly enough, the masked men open fire, grab the money and flee.

S1.E7 ∙ Sex Fiend

When women are being drugged and sexually assaulted, a forensic toxicologist wrestles with his own integrity to nail the disgusting culprit.

S1.E8 ∙ The Frankenstein of Sleep

A man drives 20 minutes along a super-highway and then murders his mother-in-law, allegedly while sleepwalking. Can a sleep expert determine if this is a bogus defense?

S1.E9 ∙ Bone of Contention

When a leg bone washes ashore, a forensic pathologist holds the key to the five W's (who, what, where, when and why) of the mystery.

S1.E10 ∙ Schemes and Dreams

Experts from documents and chemistry become the arbitrators on whether a cheque and a lottery ticket are genuine of forgeries.

S1.E11 ∙ The Cheerleader Murder

When a vivacious cheerleader is murdered and sexually assaulted, DNA profiling helps investigators exonerate the innocent and convict the guilty in a 13-year-old case.

S1.E12 ∙ The Accident

Just as a woman is about to be cremated after a traffic fatality, a blood spatter analysis is needed to determine if it really was an accident.

S1.E13 ∙ A Dark Crime

When a Montreal co-ed is murdered, and no suspect is found, a criminal profiler sheds new light on a dark crime.

S2.E1 ∙ Little Girl Lost

S2.E2 ∙ Evil Lives Here

The murder of a suburban teenager leads investigators into the dark world of punks and skinheads.

S2.E3 ∙ The Russian Princess

A young woman is found dead with a bite mark on her body. Can a forensic dentist help them track down her obsessed killer?

S2.E4 ∙ Bugs

Maggots that have eaten away the face of an unknown victim could turn out to be the key to solving the brutal murder.

S2.E5 ∙ Six Little Letters

A son battles his stepmother for a $2, 000, 000 will. Can science reveal the truth about a dead man's final wishes?

S2.E6 ∙ Video Guilt

Maggots that have eaten away the face of an unknown victim could turn out to be the key to solving the brutal murder.

S2.E7 ∙ The Danforth Lady

When the skull of a young woman is unearthed, it leads police and scientists to a 50 year old murder mystery.

S2.E8 ∙ The Gun Men

Two men who kill a gun shop owner and steal a cache of handguns begin a crime spree that terrorizes a city. How will science turn the weapons back on the killers?

S2.E9 ∙ The Solar Temple

Accident, murder or suicide? Forensics tell the gruesome tale of the Solar Temple cult and their belief that death by fire would lead to rebirth on the planet Sirius.

S2.E10 ∙ The Perfect Heist

The crooks are their own worst enemies in this absolutely perfect crime gone wrong.

S2.E11 ∙ The Headless Corpse

A headless corpse baffles police and shocks a community. It is up to an astute pathologist to lead investigators to the brutal murderer.

S2.E12 ∙ Sad Mother

For twenty five years a woman receives the sympathy of family and friends for the tragic sudden deaths of each of her five small children. Can good forensic science expose bad medical science to solve an unthinkable crime?

S2.E13 ∙ The Queen of Cons

A headless corpse baffles police and shocks a community. It is up to an astute pathologist to lead investigators to the brutal murderer.

S3.E1 ∙ House Hermit

After breaking into a series of cottages, a mysterious house hermit turns killer. The case is unlocked when the police turn to the public for help and release the killer's distinctive handwriting to the press.

S3.E2 ∙ Killer in a Box

In 1986, Toronto and the rest of Canada were stunned by the Alison Parrott case. More than a decade would pass before this tragic case would be solved thanks to the perseverance of the newly formed "Cold Case Squad." In the meantime, the horror of Alison's fate changed many parents' views towards the safety of their children and ushered in an era of educating kids on street smarts.

S3.E3 ∙ Sky High

A quiet May evening is shattered by the blast of a huge explosion and minutes later part of a quiet urban neighborhood is up in flames. The police are confronted with hate slogans spray-painted onto what is left of a garage door. Is this a hate crime and if so, who was the target?

S3.E4 ∙ Suspicion

An Ottawa journalist champions early parole for a convicted murderer and in the tradition of a cheap romance novel, ends up falling in love with him. After he's released, the two move in together. Then she mysteriously disappears. Where else would suspicion fall but upon the ex-con lover?

S3.E5 ∙ Fabric of Lies

A three and a half-year-old child is reported missing. After a 20-day search, her body is found floating in Toronto harbour. Fibre evidence found throughout the child's clothes plays a crucial role in solving this crime and convicting a child killer.

S3.E6 ∙ Tragedy of Errors

"Tragedy of Errors" focuses on the forensic skills of two blood spattering experts, who not only teach at the police college in Ottawa - but are still active in the field. The difference between academic knowledge and the reality of an actual crime scene is brought to life in this intriguing episode.

S3.E7 ∙ Killer Gloves

An intruder breaks into a family home in a well-to-do Calgary neighbourhood. When he's confronted by the owner, the burglar stabs him to death. The killer flees leaving behind several smudged prints on a window that appear to be left by a pair of gloves. Can these help nail a murderer?

S3.E8 ∙ Dead Sea

A dead body is fished out of the sea. Wearing shoes and a Rolex watch, but no I.D. - is it murder or suicide? So begins the Albert Walker case - wanted for embezzlement in Canada, fled to England, then killed a man to steal his identity.

S3.E9 ∙ The Trouble with Susan

Bob Ade' Adamson lived with his common law wife Susan in Ontario Canada. He was a man who couldn't seem to get his life together, relying mainly on anyone around him for his income. When Susan first met Ade' she fell for his charm but it wasn't long before she realized he wasn't the catch she initially thought he was and she wanted out of the relationship. Susan's father, who was living in an assisted care home, had a monthly income that Susan controlled. Ade'decided he'd like to have this money for himself and the only way to get it was to get rid of Susan. But she was soon missed and of course the people next to her are the first to be suspected and the police found the bathroom to be just a little too new, remodeled to cover evidence it appeared, or at least that's what Ade' thought he had done. Susan's body was subsequently found in a log in a heavily wooded area. Ade' tried to escape to the US, staying with Susan's uncle, but when the unsuspecting man didn't enjoy the intrusion, Ade' then fled to Calgary where the police caught up with him at the airport. During police interrogations, Ade' would change his story to fit the evidence. The ruse failed and Ade' was convicted of murder.

S3.E10 ∙ Stopwatch Gang

In 1974, this band of gentlemanly bank robbers from Canada stole $700,000 in gold bricks from a storage warehouse at Ottawa International Airport. It was and still is Canada's biggest-ever gold robbery. The gang was eventually caught, but escaped before the end of the 70's. After escaping, all three moved to the US and regrouped, beginning an incredible string of more than 50 bank robberies.

S3.E11 ∙ Stalker

S3.E12 ∙ Double Jeopardy

As sophisticated as forensic science has become, the human factor opens the door to fallibility. "Double Jeopardy" presents a tragic example of what happens when forensic science fails. In this case, a forensic scientist misinterprets the facts surrounding a shooting, thereby allowing the guilty party to walk free. But the victim's mother won't let the case rest.

S3.E13 ∙ Out of Control

A finger print from a piece of broken glass sets in motion what becomes an investigation spanning 2 provinces and involving numerous police forces and social agencies. A deranged murderer is on the loose, and needs to be stopped before he kills again.

S3.E14 ∙ Mapping Evil

Two young sisters are murdered and recovered DNA points a "finger from the grave" at the killer. The police determine the crime scene had been staged to look like a 'break and enter' and the primary motive for the crime was homicide not theft.

S4.E1 ∙ Time Bomb

A bomb goes off in a postal truck in downtown Toronto. A security camera records the reaction of the burning postal driver. His trauma is so severe, he is put in an induced coma. Who set the bomb? Who was the target? Investigators and bomb experts put all the pieces together to solve a devilish case.

S4.E2 ∙ North Bay

An exhaustive 18-month investigation follows the murder of a young woman in North Bay. The prime suspect's DNA matches that on the woman's clothes. In a startling development, further DNA tests prove the wrong man has been charged. Out of the blue, a phone call from a prison administrator in Calgary sends the investigation in a completely new direction.

S4.E3 ∙ Accident

A car carrying six friends crashes. As bodies fly in all directions, four teenagers die and two are critically injured. Sara LeBeau, who owns the car, survives but has total amnesia. Who was driving? Using toxicology, chemistry, accident reconstruction and DNA, charges are eventually laid against LeBeau. (This Ontario case is currently under appeal.)

S4.E4 ∙ Beauty Shop Bandit

In 1990, John Willis of Chicago is sentenced to 105 years in prison for a series of bizarre robberies and sexual assaults. They all take place in women's beauty shops. Willis proclaims his innocence. It is not until 1998 that a committed young US attorney and sophisticated forensics by a Toronto lab uncover a serious miscarriage of justice.

S4.E5 ∙ Turnbull

She was a typical teenager, everyone's potential sister, daughter, neighbour. In 15 minutes she went from living an ordinary life to becoming a quadriplegic. Her name is Barbara Turnbull and she was shot in a Mississauga convenience store in a senseless robbery. Ballistics will show which of two brothers did the shooting. Now a Toronto newspaper writer, Turnbull tells her own dramatic story.

S4.E6 ∙ If the Shoe Fits

The beaten and frozen dead body of a missing man is found in his abandoned car in Ottawa. The suspects are his wife and/or two male tenants. Detectives unearth stories of jealousy, abuse and a bloody boot. Whoever wore the boot killed the man. Police call on a forensic footprint specialist to solve the mystery.

S4.E7 ∙ High Park Rapist

Michael Giroux confesses to a sexual assault. A psychological assessment supports his claim that this was a one time offence. While in prison, his house is sold and the new owner finds numerous photo IDs. The police link one name with a woman who was sexually assaulted in Toronto's High Park eight years previously. Is Michael Giroux a sexual predator and the notorious High Park rapist?

S4.E8 ∙ Root Cause

The body of a cocktail waitress is found in a dumpster in Vancouver shot and burned beyond recognition. Detectives follow a maze of clues to the likely killer. Unfortunately, the body is so charred, it is impossible to see if the blood in the suspect's car matches the victims. A forensic dentist steps into the picture. Only he can get to the root of the dilemma to close the case.

S4.E9 ∙ Murder in a Small Town

A young female taxi-driver is fatally stabbed and left to die in Banff. The investigators find a knife and blood in the abandoned cab. Hundreds of men are questioned and give blood samples in a cross continent manhunt. It is two years before police identify two suspects who refuse to co-operate. It will take undercover operations to get the DNA samples and put a killer behind bars.

S4.E10 ∙ Nine Lives

A woman goes missing in Summerside, PEI. The blood inside her abandoned car tells a terrible story. DNA confirms the blood on a splattered man's jacket matches that of the missing woman. The jacket is also covered with white cat hairs. When the woman's body is found, her estranged common-law husband is charged.

S4.E11 ∙ Point Blank

Disguised bandits fell a Brinks guard in Oshawa. The police find a fake bomb in the abandoned getaway car. It is a major forensic clue in tracking the gang. The bandits are charged - but the prosecution needs to find the murder weapon. Just days before the trial, investigators get a break, putting them knee-deep in swampy water searching for the murder weapon.

S4.E12 ∙ The Two Mr. Smiths

Firefighters find two dead bodies on a burning boat in Sydney Harbour, Vancouver Island. Another boat has been broken into. The assailants may have drunk beer from the discarded cans on the boat. A forensics ID unit matches the cans through a serial code on the lid. Whoever broke into the second boat also killed the couple on the burning boat.

S4.E13 ∙ Bare Bones

A hunter makes a gruesome discovery near Saskatoon - a human skull. Detectives find the remains of two more bodies close by. A forensic anthropologist determines the three victims are female and aboriginal, all killed in the same time frame. The victims are identified through a police artist's reconstruction drawings. Behavioural profiler Ron MacKay helps nail a brutal serial killer.

S4.E14 ∙ Dead Drunk

A middle aged Vancouver barber is having remarkably bad luck with his girlfriends - they kept dying. Coincidentally they were all native and alcoholics, so it is some time before an astute pathologist questions the staggeringly high blood alcohol levels. Forensic science pins Gilbert Paul Jordan as the serial killer in the world's first trial of homicide by alcohol poisoning.