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
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
The naked body of a Swedish man is found, a father and son are accused of killing a woman and a police officer impostor disposes of her love rival. S5/Ep5
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
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
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
A woman's severed torso is pulled from the Mississippi River; can police identify the victim and catch her killer? Plus, a state trooper makes a grim discovery. S5/Ep9
Tiny evidence helps bring to justice a murderer who stabbed two young women to death. Plus, the search for the identity of a woman found decapitated. S5/Ep11
Discover how a killer can try to cover his tracks, but evidence is hard to conceal when a special breed of investigative dog picks up the scent. S5/Ep13
How advances in technology can expose a murderous liar, such as the man who staged his wife's suicide to cash in a $100,000 life insurance policy. S5/Ep1
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
Learn the ways that investigators are always on the cutting edge of new forensic techniques, helping them solve cases and catch criminals more swiftly. S2/Ep8
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 a young woman is found raped and strangled, the race is on to stop a serial killer. Plus, an ex-cop claims his wife shot herself - is he telling the truth? S8/Ep4
Three cases illustrating the extreme measures investigators take to catch a killer when a missing person is presumed dead but no body can be found. S4/Ep6
Features investigations in which natural clues, including insect bites, cat hair and a rare form of bacteria helped forensic scientists solve murders. S4/Ep4
The occurrence of letter-bombing is becoming increasingly more frequent, but the crime lab is the place where the scientists pursue the bombers. S1/Ep11
With only charred remains left of the victim, forensic detectives have to sift carefully through this scanty evidence to solve a perplexing murder. S1/Ep10
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
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
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
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
Poisoners: devious killers relying on their victim's trust in order to steal their lives. Find out why they don't usually stop at just one kill. S3/Ep9
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
No matter how clean a crime scene appears to be, the culprit often leaves something behind. Even a fingerprint or shoe tread can lead to a conviction. S3/Ep3
Sometimes, when a death seems to be accidental, it is up to forensic scientists to reveal hidden betrayals that reclassify cases from accidents to homicides. S7/Ep90
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