Sometimes blood relations lead to bloodshed: when murder becomes a family affair, investigators must turn to forensics to uncover family plots. S4/Ep9 [S,AD]
A serial killer is preying on male prostitutes and mutilating their bodies; can police catch him before he strikes again? Plus, a divorce case ends in murder. S5/Ep6 [S,AD]
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 [S,AD]
The disappearance of an elderly vagrant leads police to the drug-dependent landlady who has killed seven victims for their social security cheques. S5/Ep8 [S,AD]
A girl is savagely murdered in her home; who killed her and is she the only victim? Plus, a serial killer is preying on elderly women in an exclusive residential area. S6/Ep2 [S]
A woman is found shot dead two miles from her car and a couple in California are gagged and shot. Investigators attempt to trace the murderer. S6/Ep3 [S]
A look at when there are no eye-witnesses to murder, photographic evidence can provide investigators with a permanent record of the killer. S6/Ep17 [S]
A woman, Betty, identifies a dead body as her missing sister Annie - but Annie is still alive. A look at murderers who kill to acquire a new identity. S6/Ep4 [S]
Discover how toxicologists look for clues in blood and tissue to bring murders to light, including the case of a wife poisoned by cyanide. S5/Ep7 [S,AD]
Discover how scientists can search beneath water for proof of homicide, with cases including a woman found floating in a pond tied to a car jack. S5/Ep12 [S,AD]
A woman, Betty, identifies a dead body as her missing sister Annie - but Annie is still alive. A look at murderers who kill to acquire a new identity. S6/Ep4 [S]
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
Is the rapist and serial killer known as the Hillside Strangler working alone? Plus, a murderer is stalking California's parks; can detectives stop him killing again? S3/Ep6
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
Hiding a body can be tricky - it's sometimes easier to obscure the circumstances of death, turning murder into suicide or blaming it on someone else. S3/Ep4
It is the insignificant details that forensic experts use to recreate a crime and catch a killer - fibres from a carpet, a lost eyelash or a clothing fragment. S2/Ep3
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
In Florida, a killer admits murder but no one can find his victim; and in Virginia, police have a decomposed body, but no suspect. Can forensics crack these cases? S1/Ep3
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
In the dead of night, a house catches fire but forensic investigators determine the blaze is a smokescreen designed to hide a more horrific crime. S7/Ep10
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 makeshift coffin conceals a body - can insects help cops identify the corpse? Plus, a parasite expert proves murder when a woman is found in a dumpster. S6/Ep15
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
Dismembered human remains are found in a grocery bag on a riverbank - will detectives be able to piece together the victim's identity and catch a killer? S6/Ep14
When a makeshift cemetery is uncovered by a road, detectives realise a serial killer is at large. Will they be able to catch him before he murders more women? S6/Ep11
A man risks everything to find his sister's killer - can a sympathetic detective with a great theory help him? Plus, a sexual predator is getting away with murder. S6/Ep10
Examining how some killers leave personal marks on their victims. But with the help of hi-tech forensics, police use the marks to capture the killer. S6/Ep8
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 girl is savagely murdered in her home; who killed her and is she the only victim? Plus, a serial killer is preying on elderly women in an exclusive residential area. S6/Ep2
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
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
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
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
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