Eagle-eyed technical experts prove there is no such thing as a perfect crime as they assemble the pieces every criminal leaves behind. Dramatic crime re-creations and, sometimes, part of the investigations are a staple of the series. Some of the re-creations include alternate versions of the crimes, which are disproved by science. The show's episodes follow each case from the initial investigation until it reaches its legal resolution.
A murder investigation leads the authorities to a discarded sleeping bag containing traces of an horrific act. S9, Ep1
A woman's apparent accidental death begins to look fishy after police uncover a letter written by the victim. S9, Ep2
The discovery of vital evidence helps detectives piece together the case. S9, Ep3
A woman vanishes without a trace. But, twenty years on, a clump of hair and a dedicated team of scientists uncover the victim's body. S9, Ep4
Police dogs trace a killer's scent and reveal a twisted perpetrator. S9, Ep5
A victim is unsuspectingly poisoned with arsenic, but how did it enter her system? And, was it purely accidental or intended? S9, Ep8
Using a meticulous reconstructive process, it's not long before a killer is brought to justice. S9, Ep9
A forensic psychiatrist is brought in to help distinguish fact from fiction after a woman's husband is shot dead. S9, Ep10
An investigation into a deadly blaze, which killed a middle-aged woman, may not be such an obvious open and shut case after all. S9, Ep6
Vital clues are gleaned from the body of a 16-year-old girl found nine months after she disappeared. Will the killer be found? S9, Ep11
When a young woman falls from a cliff to her death, forensic examination of photographs from the scene uncover a sinister truth. S9, Ep12
A persistent investigator finally uncovers the truth in a ten year old case of an elderly couple's murder. S9, Ep14
A young woman's investigation into the disappearance of her mother uncovers a shocking family secret. S9, Ep13
A street fight that claimed the life of a wrestling champion led to a murder trial. S9, Ep15
Cutting-edge forensic science helps solve real crimes. Devon Guzman's murder was set up to look like suicide, but investigators uncover the shocking truth. S9, Ep16
A man disappears one year after starting an affair with his friend's wife. Fifteen years later, a hobbyist with a metal detector helps police find new evidence. S9, Ep17
The body of a co-ed was found by police who had no idea who would want this girl dead. Her killer was found thanks to a unique fibre on the victim's clothing. S9, Ep18
A car carrying three secret service agents collided with a car driven by a local deputy. They were killed instantly. The investigation leads to two very different conclusions. S8, Ep40
In the deadliest train crash in US history, forty-seven were killed and many more injured. Clues to the cause lay etched in twisted steel and buried in the mud of the Bayou Canot. S8, Ep41
A fire at Kings Cross Underground Station kills 31 people. Investigators pinpoint the cause of the fire, but it takes state-of-the-art technology to explain why it became deadly. S8, Ep42