A motel clerk disappears, leaving behind a trail of blood. Investigators have their suspect, but without a victim, what can they charge him with? S1/Ep9
Just a few microscopic cells, from even a single hair or drop of blood, can place a murderer behind bars. What does DNA mean for crime solving today? S1/Ep6
Find out how blood can be the most telling evidence of a murder, and is often the only thing investigators have to link a killer to his victim. S8/Ep15
A security guard finds an employee dead in the driver's seat of his car. Police suspect that someone was illegally hunting and shot the victim. S8/Ep12
From personality profiles to DNA testing and fibre analysis, look at how the latest technology in forensic science helps criminologists solve a case. S8/Ep8
A trucker disappears - police search extensively only to find what they feared in their own backyard. And two sudden deaths are not as coincidental as they appear. S8/Ep7
From microscopic DNA to ballistics and tiny fibres, find out how cutting edge technology and forensic science is used to bring killers to justice. S8/Ep6
Firefighters are called to a home in the middle of the night to find a fire raging out of control but a mystery woman's charred body is discovered. S8/Ep5
With no fingerprints at the scene, detectives turn to cutting-edge forensic techniques to track a callous killer, hoping to catch him before he could strike again. S7/Ep98
Forensic scientists reconstruct the scene of a bludgeoning murder in Georgia, USA, and find a suspect in the murder of a missing man. Will microfibres hold the key? S7/Ep97
A university football player and his girlfriend are beaten to death and a man is shot dead at home. Can cold forensics solve these heated crimes of passion? S7/Ep96
In most cases, the killer and victim share a personal history. But when a victim is caught in a stranger's deadly grasp, a crime may go unsolved for years. S7/Ep95
When a victim is killed at point-blank range, police assume that an acquaintance is to blame. In three cases, the murderer is not always the most obvious suspect. S7/Ep94
Killers often try to deflect attention from their crimes by hiding the remains of their victims. Visit two cases where bodies lay hidden for years before being found. S7/Ep93
Most victims of multiple murderers have a link with the killer or match their set of criteria. But some murders occur when victims appear to be picked at random. S7/Ep92
A victim's estranged spouse is often a key witness in a murder investigation, and when the body is found, family and friends can provide crucial information. S7/Ep89
Police arrest two conspirators in a plot to kill a woman, but in a dark twist, they accuse the victim's ex-husband of hiring them to kill his ex-wife. S7/Ep87
When a missing teenager is found murdered, a piece of rope provides the only clue to the killer's identity. And, police struggle to build a murder case without a body. S6/Ep18
A trucker disappears - police search extensively only to find what they feared in their own backyard. And two sudden deaths are not as coincidental as they appear. S8/Ep7
Firefighters are called to a home in the middle of the night to find a fire raging out of control but a mystery woman's charred body is discovered. S8/Ep5
When an office party takes a violent turn and a woman is harmed, forensic investigators must deal with conflicting accounts and unlock a vital clue. S7/Ep10
In Colorado the mysterious abduction of a young mother ends up as a brutal homicide. With few clues and fewer suspects, the detectives go on the chase. S7/Ep99
Forensic scientists reconstruct the scene of a bludgeoning murder in Georgia, USA, and find a suspect in the murder of a missing man. Will microfibres hold the key? S7/Ep97
With no fingerprints at the scene, detectives turn to cutting-edge forensic techniques to track a callous killer, hoping to catch him before he could strike again. S7/Ep98
When a victim is killed at point-blank range, police assume that an acquaintance is to blame. In three cases, the murderer is not always the most obvious suspect. S7/Ep94
Killers often try to deflect attention from their crimes by hiding the remains of their victims. Visit two cases where bodies lay hidden for years before being found. S7/Ep93
When killers sedate their victims and disguise the crime scene, identifying the true cause of death is hard. What hard evidence is needed to help investigators? S7/Ep88
When a missing teenager is found murdered, a piece of rope provides the only clue to the killer's identity. And, police struggle to build a murder case without a body. S6/Ep18
Crime writers know as much about crime as any crime-fighter - or criminal. They can provide as near a first-person account of a murder as is possible. S3/Ep14