Eighty-two-year-old Lou Edna Jones dies in an arson-related fire, and when authorities investigate, they learn it is the work of a serial arsonist. S2/Ep25
In Madison, Wisconsin, one of the safest cities in America, 31-year-old salesman Joel Marino is found murdered in an alley next to his house. The weapon is a simple paring knife. S2/Ep24
Leann Fletcher is found shot dead in her bedroom and Dawn Fletcher is raped and killed while house-sitting. Forensics are the key to solving these cases. S2/Ep23
College student Jodi Sanderholm failed to return home and, thanks to clues given by her dance team, a prime suspect is identified. Can a single arm hair solve the case? S2/Ep22
Three builders are found dead in the barn of a palatial estate, victims of a crime that has authorities baffled. Was this a burglary gone wrong or something more sinister? S2/Ep21
A town in 1950s Canada is turned upside down when a young girl disappears. When she is found raped and strangled in local woods, the prime suspect is her 14-year-old neighbour. S2/Ep20
The body of a missing man turns up in Lone Star Cattle country - or, at least, some of it does. Can a novice toxicologist help to solve the crime? S2/Ep19
The Columbia River Gorge is the setting for a bone-crushing car accident, involving evidence that does not stack up. When a doctor examines the victim, the mystery deepens. S2/Ep18
A 15-year-old girl is savagely beaten and killed in an Ohio cemetery. To catch this killer forensic experts must do the impossible; come up with a DNA sample when none exists. S2/Ep17
A lakeside community in rural Minnesota is sent reeling when a 19-year-old woman disappears. Police turn to a solar physicist to identify a killer with a burning desire. S2/Ep16
In a New Jersey motel, shots ring out and two construction workers lay dead. There are no witnesses, but police uncover a piece of evidence that puts them on the trail of a killer. S2/Ep15
In a quiet Mississippi town, a civil war buff vanishes into thin air. Months later, a skull is found buried at a truck stop, and another mystery unfolds. S2/Ep14
The forensic experts are called to investigate the murder of shopkeeper. With little else to go on, can they deduce more about his death from the contents of his stomach? S1/Ep13
When a woman takes her husband hunting for the first time, she finds him shot dead in a clearing in remote mountains. Investigators delve deep, uncovering a horrific truth. S1/Ep12
Forensic detectives find what appears to be the work of a serial killer when a woman's body is found by the side of a railway line. The murderer is leaving clues after each crime. S1/Ep11
On an Ohio highway a bullet rips through a driver's door, leaving a grandmother dead at the wheel. Detectives begin to unravel the mystery, discovering the shocking truth. S1/Ep10
A religious family man goes missing while on the job at a copper mine. With no body and no evidence, can the forensics convict a potential killer of the crime? S1/Ep9
Forensics experts crack the case of an Alaskan woman who was murdered in the wilderness, and they also use a killer's beard hair to find a man who slaughtered a woman in her home. S1/Ep8
Forensic scientists help to solve a homicide case by using laser technology to match a pair of wood samples that have been taken from the crime scene as evidence. S1/Ep7
It's a summer day but people relaxing by a river are about to receive a shock: a duffel bag bobbing up and down on the water contains the remains of a dismembered woman. S1/Ep6
Police are alerted to a woman's murder by her friend, but when they arrive at the victim's house they find that the dead woman's mother and her children have also been killed. S1/Ep5
A special laboratory is needed when Louisiana starts being terrorised by a serial killer who leaves no fingerprints. Can the lab use DNA evidence to find the murderer? S1/Ep4
When a lifeless woman's body is found in a lagoon, forensics experts are initially at a loss as to what might have happened to her. But then a dog hair gives them their first clue. S1/Ep3
Forensics experts find a link between the murders of two retired men: one a former naval officer and the other a businessman. Using the clues, they now need to trace the killer. S1/Ep2
While investigating a case of arson, police uncover a dismembered body in a sealed freezer. Can extreme forensics help to solve this and other cases? S1/Ep1