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.
When a wealthy tycoon is killed, his will stipulates what to do in the event of him being killed under violent circumstances. Why was he so prepared? S9, Ep27
In 1988, a banker's wife is kidnapped and the police struggle to break the case until entomology and computer forensics help to reveal a new suspect. S9, Ep29
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 the 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
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
Analysing the evidence, the medical detectives solve real crimes using forensic techniques, alongside reconstructions (which may be unsuitable for younger viewers).
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.
Analysing the evidence, the medical detectives solve real crimes using forensic techniques, alongside reconstructions (which may be unsuitable for younger viewers).
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 go-go dancer tells her family she needs to get away and vanishes for 20 years, but a phone call from out of the blue reveals the real story. S9, Ep19
A small community in upstate New York is rocked by the death of a well-respected nurse in a car accident, but seed pods in her hair suggest something sinister. S9, Ep22
A hunter is shot three times and killed. Analysis of the bullets leads the police to look closer to home and believe the 'accident' is actually murder.
A woman's disappearance in Austin, Texas, is paired with another case under similar circumstances, and DNA profiling uncovers a prime suspect. S9, Ep23
In 1984 a flurry of arson fires in California had authorities baffled, with evidence suggesting a most unlikely suspect. S9, Ep21
A tragedy on a shrimp boat during a storm sees the captain drown. The deckhand lives to tell the tale, but his version of the truth is called into question. S9, Ep26
When an American tourist is killed in a Mexican resort, police on both sides of the border use forensic evidence to uncover a sinister truth.
A frozen body wrapped in sheets is found near Anchorage, Alaska, by hikers and a salvaged fingerprint and a tuft of red carpet quickly uncover the killer. S9, Ep24
Nancy Ludwig is found stabbed to death in her hotel room in Detroit. Her death is similar to another woman, Margaret Eby, who was murdered five years earlier. S9, Ep25
A neighbour witnesses a man stab and drown his wife in their pool. However, the man claims he has no explanation and no recollection of the crime. S9, Ep30